Greubel Forsey GMT Balancier Convexe

With the new GMT Balancier Convexe, Greubel Forsey places the Earth back at the centre of its universe.

This model houses a new GMT calibre that replaces all previous Greubel Forsey GMT models. Moreover, it features, for the first time, its signature inclined balance wheel, as if in orbit around the Earth.

Greubel Forsey GMT Balancier Convexe

The perfect titanium sphere with its continents, seas and oceans, is one of the Atelier’s most emblematic creations. It was the centrepiece of the GMT, GMT Earth, GMT Quadruple Tourbillon and GMT Sport, some of Greubel Forsey’s greatest successes to date.

Today, Greubel Forsey is dedicating a brand new calibre to the Terrestrial globe, decisively replacing its predecessors. It is the purest and most contemporary interpretation of the GMT complication ever imagined, deeply rooted in the universe of the brand as well as in Haute Horlogerie.

Greubel Forsey GMT Balancier Convexe

The Earth is showcased majestically, positioned at the very heart of an amphitheatre-like construction. It moves in a constant 24-hour rotation, just as the Earth rotates in real life. This amphitheatre is bordered by three rings which indicate two complementary times: hours and minutes local time, as well as universal time.

Greubel Forsey GMT Balancier Convexe

The 24 time zones displaying universal time are set against a black background if the time indicated is at night, and on a white background during the day time.

Local time is indicated on the two outer rings: one for the hours on a grey satin-finished ring, and minutes on a thin black outer ring. Each time indication has its own hand with a red triangular tip filled with luminescent material. These hands move on two further rings, engraved with key words dear to the Atelier, to display GMT. Finally, an off-centre display at 10 o’clock indicates a second time zone with a blue gold hand.

Greubel Forsey GMT Balancier Convexe

For the caseback, Greubel Forsey opted to keep the disc with 24 time zones indicating the UTC time of the 24 reference cities, but with a rather appropriate modification. The UTC of Paris has been replaced by the city where Greubel Forsey has been established since its early days: La Chaux-de-Fonds, Switzerland.

The 30° inclined balance wheel, seemingly suspended in mid-air, is held by a beautiful flat black polished and barrel polished steel balance wheel bridge on polished steel pillars. To its right, the small seconds, displayed with a blue gold hand completes the ensemble.

Greubel Forsey GMT Balancier Convexe

The titanium bridges are hand-finished with a steel brush and take on a frosted texture never before applied by Greubel Forsey. The delicate frosted surfaces catch the light and accentuate the globe, which remains the protagonist of the arena.

Finally, the inside of the case is polished so that it mirrors the escapement platform, the Terrestrial globe, and nearly every element visible on the dial side, thus adding incredible depth to this new construction.

Greubel Forsey GMT Balancier Convexe

Designed by Greubel Forsey, the signature convex case measures 46.5mm around the bezel and 43.5mm around the case-band. Made of in titanium, it hugs the curve of the wrist perfectly. The sapphire crystal and satin-finished bezel follow the same curved geometry, which extends onto either a titanium bracelet or a textured rubber strap.

The Greubel Forsey GMT Balancier Convexe is limited to 66 timepieces: 22 per year between 2022 and 2024.

Technical details

Model: Greubel Forsey GMT Balancier Convexe in Titanium

Movement
Patented hand-wound movement
Olived-domed jewels in gold chatons
30° inclined Greubel Forsey balance wheel system
Power reserve: 72 hours
Frequency: 21’600 vibrations/hour

Number of parts
Movement: 423
Escapement platform: 59
Number of jewels: 42

Displays
Hours and minutes
Small seconds
2nd time zone GMT
Rotating globe with universal time
Day-and-night
24 time zones universal time
Summer time, winter time

Case
Titanium with curved sapphire crystal
Three-dimensional, variable geometry-shaped bezel, hand-polished with hand-finished straight graining
Raised engraving “GMT” and “Greubel Forsey”
Diameter: 43.50mm (caseband) and 46.50mm (bezel)
Height: 13.75mm (case) and 17.40mm (including synthetic sapphire crystals)
Water-resistance: 10atm – 100m – 328ft

Dial
Terrestrial globe in titanium, relief-engraved continents, ocean blue treatment
Day-and-night UTC indicator in titanium, engraved and lacquered
GMT indicator in gold
Amphitheatre hour-ring with engraved and lacquered minute-circle
Small seconds indicator in gold

Strap
Non-animal material, rubber with text in relief, titanium folding clasp, engraved GF logo
On demand: 3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF logo

Greubel Forsey Double Balancier Convexe

This new Greubel Forsey timepiece emphasizes the architectural dimension of the iconic Swiss brand’s 6th invention that is the Double Balancier. The three regulating organs (two balance wheels, one differential) occupy more than half of the dial and provide unprecedented depth.

The Double Balancier Convexe gets its name from the convex profile of its 43.5mm titanium case. This new composition showcases its movement spectacularly. The gear train emerges from below the surface of the seemingly semicircular black-treated titanium bridge and extends into the hour and minute hands which tower above it.

Greubel Forsey Double Balancier Convexe

The semicircle itself is rendered asymmetrical by an opening for the barrel cover, central hours and minutes indication, and by an opening which provides space for the small seconds indication below it. The engraved and lacquered minute indexes are nested within the three-dimensional chapter ring, but the polished hour indexes surpass it, plunging deep into the movement.

Greubel Forsey Double Balancier Convexe

Each hand has its own geometry, finish and color, depending on the role assigned to it. The hour and minute hands take on a curved profile and are filled with Super-Luminova, complementing that of the hour indexes. The small seconds and 4-minute hand indicating the rotational speed of the spherical differential are in polished blued steel while the power reserve is indicated by a polished and open-worked hand with a red tip.

Greubel Forsey Double Balancier Convexe

In the lower half of the Greubel Forsey Double Balancier Convexe, each regulating organ is sculpted individually. The two balance wheels, although identical in shape and function, occupy different planes and thus offer a complementary spectacle.

The center bridge is in itself a showcase of the creative excellence of Greubel Forsey: multi-level, open-worked and black polished with several interior angles; it carries the hour and minute hands above the movement. The inclined escapement platforms are straight-grained with hand- polished beveling and countersinks, while the differential bridge and balance wheel bridges are flat black polished with further hand-polished beveling.

Every single component is hand finished to Greubel Forsey criteria and thus stands out on its own, and at the same time it contributes to the striking overall aesthetic of this timepiece.

Greubel Forsey Double Balancier Convexe

The bridges and mainplate of the Double Balancier Convexe are in frosted and black treated titanium. A new font has been adopted for the power reserve and different elements throughout this timepiece.

The barrel cover features relief-engraved text, circular-grained with polished chamfer, describing the properties of the two coaxial barrels in series with rapid rotation (one revolution in 3.2 hours). The movement offers a 72-hour chronometric power reserve.

Greubel Forsey Double Balancier Convexe

The integrated and profiled lugs reinforce the compact and ergonomic character of this timepiece. They extend onto either a textured rubber strap or titanium bracelet.

The Double Balancier Convexe is water resistant to 100 meters. Only 22 timepieces will be made per year between 2022 and 2024 for a total of 66 pieces overall.

Technical details

Model: Greubel Forsey Double Balancier Convexe in titanium

Movement
Hand-wound movement with 2 patents
Double Balancier
Hours and minutes
Small seconds
4-minutes spherical constant differential rotation
Power-reserve display
Number of parts: 374
Number of jewels: 50; Olived-domed jewels in gold chatons
Power reserve: 72 hours
Frequency: 21’600 vibrations/hour

Case
Titanium with curved synthetic sapphire crystal
Three-dimensional, variable geometry-shaped bezel, hand-polished with hand-finished straight graining
Raised engraving “Double Balancier” and “Greubel Forsey”
Diameter: 43.50mm (caseband) and 46.50mm (bezel)
Height: 13.75mm (case) and 14.35mm (synthetic sapphire crystals)
Water-resistance: 10atm – 100m – 328ft

Dial
Three-dimensional, variable geometry hour-ring with engraved and lacquered minute-circle, black treatment
Power-reserve indicator, engraved and lacquered

Strap
Non-animal material, rubber with texture in relief, titanium folding clasp, engraved GF logo
On demand: 3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF logo

Greubel Forsey Tourbillon 24 Secondes Architecture

Featuring a new convex conical frustrum case shape, the Greubel Forsey Tourbillon 24 Secondes Architecture watch boasts an atypical construction.

Equipped with a hand-wound calibre, its components are suspended in space, revealing a harmonious composition of surfaces, shapes and movements. The case showcases the spectacle within firstly through the large opening on the dial side, encompassed by relief-engraved Greubel Forsey values that inspired this creation.

Greubel Forsey Tourbillon 24 Secondes Architecture

While the case looks perfectly round when observed from the dial side, it reveals its convex shape from other angles, along with its large synthetic sapphire crystal ring which envelopes the entire periphery of the caseband.

This novel case design enables a comprehensive look at even the smallest detail of the high-end mechanical movement. The 354 parts of this Greubel Forsey hand-wound calibre are sculpted and arranged asymmetrically yet harmoniously. The polished titanium bridges immediately stand out from the frosted finish of the mainplate.

Tourbillon 24 Secondes Architecture

Positioned at 6 o’clock, the Tourbillon 24 Secondes mechanism has a large spherical and open-worked bridge, whose base remains hidden by design. In its form, the inclined escapement defies gravity, while in its function, it compensates for it. To solve the problem of critical positions of the oscillator in relation to gravity, the Tourbillon 24 Secondes uses a fast rotation speed in addition to a 25° inclination. These two elements combined contribute to excellent chronometric performance, especially in stable positions.

Greubel Forsey Tourbillon 24 Secondes Architecture

The barrel bridge at 10 o’clock boasts polished spherical surfaces, along with polished beveling and countersinks. The barrel cover is engraved, lacquered and circular-grained and contains three coaxial series-coupled fast-rotating barrels, one of which is equipped with a slipping spring to avoid excess tension. The caliber’s energy source provides 90 hours chronometric power reserve, indicated by a moving red triangle over a conical disk at 3 o’clock. It too is held in place by a beautiful polished titanium bridge.

Greubel Forsey Tourbillon 24 Secondes Architecture

The two large curved, openworked and polished steel hands mounted on a signature Greubel Forsey tripod bridge indicate the hours and minutes. The time indication is completed at 8 o’clock by a small second on a cylinder with polished flanks.

Greubel Forsey Tourbillon 24 Secondes Architecture

Made of titanium, the Greubel Forsey Tourbillon 24 Secondes Architecture will be limited to only 11 pieces in 2022, then to 18 pieces a year between 2023 and 2025 for a total of 65 exclusive timepieces overall.

Technical details

Model: Greubel Forsey Tourbillon 24 Secondes Architecture in Titanium

Case
Titanium and synthetic sapphire crystal
Three-dimensional, variable geometry bezel with raised engraved text
Synthetic sapphire crystal over the entire periphery of the caseband
Three-dimensional, variable geometry lugs, hand-polished with hand-finished straight graining
Transparent back with synthetic sapphire crystal
Titanium security screws
Raised engraving “Architecture 1” and “Greubel Forsey”
Caseband diameter: 47.05mm
Bezel diameter: 45.50mm
Height: 16.80mm
Water resistance: 5atm – 50 m – 164ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown: Titanium, polished and frosted, with GF logo

Dial
Three-dimensional, variable geometry hour-ring, indexes with Super-LumiNova
Power-reserve indicator, circular-grained, engraved and lacquered
Gold small second indicator, circular-grained, polished flank
24-seconds tourbillon rotation indicator

Hands
Hours and minutes, curved profile, polished steel with Super-Luminova
Small seconds, red triangle
Power-reserve rack, circular-grained, polished bevelling, straight-grained flanks
24-seconds double-tipped, black anodised aluminium

Movement

Hand-wound movement with 2 patents
Overall diameter: 38.70mm
Thickness: 12.35mm
Number of jewels: 42
Olived-domed jewels in gold chatons
Frequency: 21’600 vibrations/hour
Power reserve: 90 hours

Number of parts
• Movement: 354 parts
• Tourbillon cage: 86 parts
• Weight of the cage: 0.38g

Barrels
• Three coaxial series-coupled fast-rotating barrels
(1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
• Engraved pattern with Greubel Forsey, lacquered, circular-grained

Balance wheel
• Variable-inertia with gold mean-time screws (10mm diameter)

Balance springs
• Phillips terminal curve
• Geneva-style stud

Bridges and main plate
• Titanium
• Frosted, polished bevelling and countersinks
• Polished spherical bridges, polished beveling and countersinks
• Three-dimensional centre bridge, frosted, polished bevelling and countersinks

Movement side
• Three-dimensional power-reserve bridge, frosted, polished bevelling and countersinks
• Tourbillon bridge, polished bevelling and countersinks, circular-grained
• Engraved pattern with individual number, circular-grained, straightgrained flanks

Tourbillon
• Inclined at a 25° angle, 24-seconds rotation
• Light alloy cage pillars
• Titanium cage bridges
• Gold counterweight

Gearing
• Involute circle profile
• Tangential inclined gear on fixed wheel and profiled teeth on escape wheel pinion

Displays
Hours and minutes
Small seconds
Power reserve on a sector
Tourbillon rotation

Strap and clasp
Non-animal material, rubber with text in relief, titanium folding clasp, engraved GF logo

GREUBEL FORSEY BALANCIER Convexe S2

GREUBEL FORSEY presents Balancier S2, a new timepiece that isolates the most powerful elements of the independent Swiss brand’s original Balancier S watch and accentuates and modernises them. Instead of soft curves and a discreet overall aesthetic, the Balancier S2 is all about contrast and power. It shares the same movement of Balancier S but comes with a new case, new finishing and new design codes.

GREUBEL FORSEY BALANCIER S2

Greubel Forsey has substantially improved the readability of the dial with an intense black or grey backdrop that cuts through the balance bridge between 5 and 9 o’clock. The edges are sharp and the matt-effect hand-grained finish allows the bridge and indices to stand out much more clearly. The dial features 12 towering indices for 12 hours. For the first time, the central double-arched titanium bridge which holds the gear train is open-worked.

GREUBEL FORSEY BALANCIER S2

A timepiece designed for everyday use, Balancier S2 comes with a new titanium bracelet. It offers perfect continuity with the titanium case, exuding a robust and contemporary appeal.

GREUBEL FORSEY BALANCIER S2

The Balancier S2 also features a slightly larger case measuring 46.5mm diameter. It is topped by a striking brushed titanium bezel with polished flanks, instead of the key Greubel Forsey values. Similarly, the barrel cover no longer features the large “Greubel Forsey” signature, but instead a very modern circular pattern designed exclusively for this model. The Greubel Forsey signature appears under the internal bezel between 12 and 2 o’clock. Suspended high above, the hour and minute hands appear in luminescent white.

GREUBEL FORSEY BALANCIER S2

Only 88 pieces of this new Balancier S2 will be made for the version with a charcoal grey backdrop, for a total of 22 pieces per year from 2022 to 2025. For the version with a light grey background, 16 pieces per year will be released over 4 years, totalling 64 pieces. Both versions will come in a titanium case.

GREUBEL FORSEY BALANCIER S2

Technical details

Model: Greubel Forsey Balancier S2

Case
Titanium with curved synthetic sapphire crystal
Three-dimensional, variable geometry-shaped bezel, hand-polished with hand-finished straight graining
Profiled lugs, screwed fixing
Transparent back with high domed synthetic sapphire crystal
Titanium security screws
Raised engraving “Balancier Incliné” and “Greubel Forsey”
Caseband diameter: 43.50mm
Bezel diameter: 46.50mm
Case height: 13.75mm
Height on synthetic sapphire crystals: 15.70mm
Water resistance: 10 atm – 100 m – 328 ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown: Titanium, polished and straight-grained, with GF logo

Dial
Three-dimensional, variable geometry minute-circle, polished, with engraved and lacquered minutes indexes
Three-dimensional, variable geometry hour indexes, polished, with Super-Luminova
Power-reserve indicator, engraved and lacquered
Gold small seconds dial, polished bevel, black treatment

Hands
Hours and minutes, curved profile, polished steel with Super-Luminova
Small seconds, in polished steel, flat black polished head
Power-reserve, red triangle

Strap and clasp
Non-animal material, rubber with texture in relief, titanium folding clasp, engraved GF logo
On demand: 3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF logo

Movement specifications

Movement
Hand-wound movement • Patents pending
Hours and minutes • small seconds • power-reserve
• 30° inclined Greubel Forsey balance wheel system

Displays
• Hours and minutes, on suspended arch bridge
• Small seconds
• Power reserve on a sector

Movement
Movement dimensions
Overall diameter: 38.00mm
Thickness: 10.70mm

Number of parts
• Movement: 307 parts
• Escapement platform: 68 parts

Number of jewels
• 42
• Olived-domed jewels in gold chatons

Chronometric power reserve
• 72 hours

Barrels
• Two coaxial series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
• Relief-engraved text, circular-grained, black treatment, polished chamfer

Balance wheel
• In-house variable-inertia with 6 gold mean-time screws (12.60 mm diameter)

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Bridges and main plate
• Titanium
• Frosted, polished bevelling and countersinks, black treatment
• Multi-level, open-worked suspended-arch bridge, black treatment, straight-grained and polished, polished bevelling and countersinks

Movement side
• Frosted bridges, black treatment, polished edges and bevelling
• Gold plate with engraved limitation number, circular-grained, polished bevelling and countersinks, straight-grained flanks

Escapement platform
• Titanium
• Inclined at a 30° angle
• Frosted, polished countersinks, large straight-grained inclined facet
• Multi-level, open-worked balance wheel bridge, black treatment, straight-grained and polished, polished bevelling and countersinks

Gearing
• Involute circle profile
• Inclined gear and profiled teeth on intermediate wheels of the set hands mechanism and small seconds

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

Independent Swiss luxury watch manufacture Greubel Forsey has released a special edition GMT Sport watch for Sincere Fine Watches.

Sincere Fine Watches is Greubel Forsey’s long-standing partner in Singapore. This limited edition timepiece highlights the vivid orange color. It’s a rare colour in the brand’s standard palette.

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

Greubel Forsey has woven the orange colour into its entire composition: on the internal bezel, the tips of the hours and minute hands, the crown, the engraving on the pushers, the hour markers, power reserve, and 2nd time zone GMT indication. A bright shade of orange adorns the oceans and seas of the Earth, positioned at 7 o’clock.

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

Straps are presented in three options. The first in textured orange rubber with the Greubel Forsey core values engraved on the back; the second in a brand-new ultra-light titanium integrated bracelet decorated with polished, matte, and frosted finishes exuding a dressier, more sophisticated look; and finally a traditional black strap.

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

The movement of the Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition” provides a setting for two of the Atelier’s emblematic complications. The first, between 12 o’clock and 2 o’clock, is the Tourbillon 24 Secondes. In this, Greubel Forsey’s third Fundamental Invention, the cage is inclined at a 25° angle and completes a full rotation every 24 seconds, two features that give it better timekeeping performance than most traditional tourbillons – as well as providing a truly unique visual effect.

Secondly, there is the globe of the Earth, placed between 7 o’clock and 9 o’clock, embodying the three-dimensional time display championed by Greubel Forsey. This patented invention performs a complete rotation in 24 hours, allowing universal time to be read off easily and intuitively. Seen as if from above the North Pole, a ring with 24-hour markings allows local time to be read for all longitudes, whilst also acting as a day/night indication.

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

On the caseback side, a disc displaying city names surrounded by 2 rings allows the wearer to read Universal (UTC) and Summer Time for 24 cities in 24 major time zones. For this special edition, the Singapore name has been made bright red. This disc also distinguishes the time zones applying summer time (on a light backdrop) from those that do not (on a dark backdrop).

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

The new case profile has a horizontal satin finish, giving the dial a more expansive feel. The edges of the bezel are polished and replete with gentle curves and highlights. The new finish highlights the very distinctive profile of the GMT Sport’s bezel: an elliptical shape that is slightly curved at 12 o’clock and 6 o’clock to fit the curves of the wrist.

The GMT Sport’s new bracelet is the first metal bracelet ever made by Greubel Forsey. Designed completely in-house, and specifically for this model, the titanium bracelet is integrated into the case of the GMT Sport and profiled in such a way that it seamlessly extends the oval profile of the case and bezel. It is also equipped with a wrist quickfit system that provides the few millimetres’ difference needed to choose between a casual, loose fit, or a snug, tighter fit on the wrist.

Greubel Forsey GMT Sport “Sincere Fine Watches Special Edition”

On the dial side, the suspended arch bridge in the centre and the tourbillon bridge are open-worked, making the three-dimensional time display more readable and showcasing the bright orange tone.

Featuring a caseband diameter of 42mm (45mm with the bezel), this expression of the GMT movement’s technicality naturally matches the intuitive way in which it is read, with central hours and minutes, second time band at 10 o’clock, power reserve at 3 o’clock, and globe at 8 o’clock.

This special edition is strictly limited to 5 pieces, with exclusive designs reserved for Sincere Group across Singapore, Malaysia and Thailand.

Technical details

Model: Greubel Forsey GMT Sport Sincere Fine Watches Special Edition
In titanium, black movement

Edition
Limited edition of 5 pieces

Movement
Hand-wound movement with 3 patents • Patents pending
Number of movement parts: 435
Number of jewels: 63 Olived-domed jewels in gold chatons
Power reserve: 72 hours
Frequency: 21’600 vibrations per hour
Tourbillon inclined at a 25° angle; 1 rotation in 24 seconds

Functions
GMT • 2nd time zone • rotating orange globe with universal time and day-and-night • universal time on 24 time zones • summer and wintertime • cities observing summer time • GMT and Earth pushers • Tourbillon 24 Secondes • hours and minutes • small seconds • power-reserve

Case
Titanium with curved synthetic sapphire crystal
Three-dimensional, variable geometry-shaped bezel, hand-polished with hand-finished straight graining
Diameter: 42,00mm (caseband) and 45,00mm (bezel)
Case height: 15.70mm (17.80mm with synthetic sapphire crystals)
Water-resistance: 10atm – 100m – 328ft

Dial
Three-dimensional, variable geometry hour-ring
GMT indicator, power-reserve indicator and Tourbillon rotation indicator
Rotating globe with fixed day-and-night UTC indicator

Strap
Orange rubber with text in relief, titanium folding clasp, engraved GF logo
3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF logo
Traditional black strap

Greubel Forsey GMT Earth Titanium Final Edition

Greubel Forsey During Geneva Watch Days 2021, Greubel Forsey launched the third and final interpretation of its GMT Earth. Made of titanium, this intense black version is a limited edition of 11 pieces.

The GMT Earth by Greubel Forsey is an extraordinary wristwatch that, for the first time, makes it possible to appreciate the entirety of the world in a single glance.

This technical feat first appeared in 2011. At the time of the first “GMT”, the Earth was not yet fully revealed. Seven years later, the design of the Earth was finally complete: visible from all angles in its new sapphire alcove, it appears as though it is floating in space. On the front as well as the back, the laser-engraved Earth shows world times that are both quick and easy to read.

The first version of the GMT Earth was in white gold. The second was in platinum. Now, this timepiece is available with a new titanium case. The GMT Earth in titanium will be available in a limited edition of 11 pieces, three times less than the original version. Weighing just 117g, the weight of the strap has been reduced by two-thirds. The case has lost just over a third of its weight.

Greubel Forsey GMT Earth Titanium (Final Edition)

Titanium is used not only for the entire case, but also the bridges, the GMT push-piece, the crown and the folding buckle, the latter two being the components most exposed to shocks and scratches.

To accompany the light and matt tones of titanium, Greubel Forsey opted for a black finish on the dial. It is applied to the spotted bottom plate and to all the frosted bridges, with straight flanks, polished bevelling and countersinks. This finish is also featured on an all-black natural rubber strap, whose inner face is engraved with the cardinal values of the Greubel Forsey Atelier and which are visible on the bezel.

Greubel Forsey GMT Earth Titanium (Final Edition)

The GMT Earth displays four key pieces of information on its dial side. The first is the off-centre hours, minutes and seconds display. The first two feature large open-worked hands finished with a Super-LumiNova tip, complemented by a small seconds hand on a sapphire disc at three o’clock.

Greubel Forsey GMT Earth Titanium Final Edition

On the left is the GMT indicator, whose red hand effortlessly stands out against a hand-engraved black gold disc filled with lacquer. The third, located opposite the crown, is the power reserve, designed following the same process: a black, engraved gold segment, filled with lacquer and covered by a silver-polished steel hand.

Greubel Forsey GMT Earth Titanium Final Edition

Finally between 7 o’clock and 9 o’clock, the Earth occupies the largest space, completing a full rotation in 24 hours. The engraved sapphire ring around the equator acts as a day / night indication and allows you to instantly see which hemisphere is in the daytime and which is at night.

Greubel Forsey GMT Earth Titanium (Final Edition)

Located on the side of the caseband, a final window opens to show the equator. Thanks to this, the Earth really can be seen from all angles.

Finally, on the caseback side, the worldtime display indicator completes the design. 24 time zones indicate the UTC of 24 major cities – with those that observe daylight savings on a white background.

Greubel Forsey GMT Earth Titanium Final Edition

The GMT Earth boasts Greubel Forsey’s third invention Tourbillon 24 Secondes, which uses a fast rotation speed and is set at an angle to resolve the positioning problem in relation to gravity and which is crucial for the operation of the oscillator. The 25° angle and the rapid rotation of the tourbillon cage significantly improve the chronometric performance of a system containing only one tourbillon, especially those in fixed positions.

Technical details

Model: Greubel Forsey GMT Earth Titanium Final Edition

Edition
Limited edition of 11 pieces in titanium

Special features
GMT • 2nd time zone • rotating globe with universal time and day-and-night • complete and global view from northern to southern hemisphere • universal time on 24 time zones • summer and winter time • cities observing summer time • lateral window showing the equator • GMT pusher • Tourbillon 24 Secondes • hours and minutes • small seconds • power-reserve indicator

Movement

Hand-wound movement with 3 patents

Movement dimensions
• Diameter: 36.40mm
• Thickness: 11.55mm

Number of parts
• Movement: 453 parts
• Tourbillon cage: 86 parts
• Weight of the cage: 0.39g

Number of jewels
• 60
• Olived-domed jewels in gold chatons

Chronometric power reserve
• 72 hours

Barrels
• Two coaxial series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension

Balance wheel
• Variable-inertia with gold mean-time screws (10mm diameter)

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Main plate
• Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, black treatment

Bridges
• Nickel silver, frosted with polished bevelling and countersinks, straight-grained flanks, black treatment
• Flat black polished steel tourbillon bridge, hand-polished bevelling and countersinks
• Flat black polished steel screws, blued by heat treatment

Tourbillon
• Inclined at a 25° angle, 24-seconds rotation
• Light alloy cage pillars
• Titanium cage bridges
• Gold counterweight

Gearing
• Involute circle profile
• Tangential inclined gear on fixed wheel and profiled teeth on escape wheel pinion

Displays

Hours and minutes
Small seconds
72-hours power reserve on a sector
2nd time zone GMT
24 time zones universal time
Rotating titanium globe with universal time
Complete view from North Pole to South Pole
Summer time
Day-and-night

Exterior

Case
In titanium, with titanium plates, engraved, hand-finished with text, screwed to the caseband
Lateral window with shaped synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs
Three-dimensional synthetic sapphire crystal caseback, with integrated dome
Three-dimensional, asymmetrical, synthetic sapphire crystal bezel
Raised polished engraving “GMT Earth” and “Greubel Forsey” on a hand-punched background
Gold security screws
Titanium GMT pusher with raised engraving on a hand-punched background
Engraved individual number
Water-resistance: 3atm – 30m – 100ft (standard NIHS 92-20/SN ISO 22810:2010)

Case dimensions
Diameter: 45.50mm
Height: case 16.18mm
Height on synthetic sapphire dome: 18.00mm

Crown
In titanium, synthetic sapphire insert with GF logo

Dial Side
Multi-level hour-ring in synthetic sapphire, galvanic growth hour indexes, engraved and lacquered minutes and small seconds
Power-reserve and GMT indicators in gold, engraved and lacquered, circular-grained, black treatment
Rotating globe with day-and-night UTC indicator in synthetic sapphire, engraved and lacquered

Movement Side
Synthetic sapphire disc displaying city names surrounded by 2 gold rings (UTC and summer time) engraved and lacquered
Gold “summer time” plate with individual number, raised engraving
South Pole of the globe with UTC indicator, engraved and lacquered, hand matt lapped

Hands
Hours, minutes, small seconds and power-reserve in polished steel, hand-polished countersinks
2nd time zone GMT indicator, red triangle

Strap and clasp
Rubber or hand-sewn alligator
Titanium folding clasp, engraved with the GF logo

Greubel Forsey New GMT Sport with Integrated Metal Bracelet

Unveiled during the Watches and Wonders Digital exhibition in April 2021, this new GMT Sport watch in titanium is the first Greubel Forsey creation with a completely integrated metal bracelet. With a new bezel and new finishes, this spectacular timepiece comes in a limited edition of just 33 pieces.

Greubel Forsey New GMT Sport with Integrated Metal Bracelet

Taking centre stage for the first time on the GMT Sport, the distinctive Greubel Forsey bezel now subtly relieved of the relief engraved key values, takes on a completely new profile. With hand-finished horizontal straight-graining on top and the hand-polished contour and flanks taking on a soft yet striking new form, the bezel is beautifully refined, opening up the dial to attract even greater focus to the essential – the Greubel Forsey movement and hand-finishing, a characteristic of every timepiece.

This new finish highlights the unique profile of the GMT Sport’s bezel, an ellipse that gently curves at 12 o’clock and 6 o’clock to hug the contours of the wrist – a passion for perfect ergonomics that reaffirms the contemporary, everyday style of this exclusive timepiece.

Greubel Forsey New GMT Sport with Integrated Metal Bracelet

This ergonomic design is further pursued in the new bracelet of this GMT Sport – the first ever metal bracelet on a Greubel Forsey creation. Entirely conceived in the Atelier and specifically for this timepiece, it is fully integrated into the case of the GMT Sport and profiled to seamlessly follow the elliptical shape of its case and bezel.

Faithful to its tradition, Greubel Forsey has devoted particular attention to finishing with three distinct styles distributed over both the lateral and central links: straight graining, frosting and hand-polished bevelling.

Greubel Forsey New GMT Sport with Integrated Metal Bracelet

For example, frosting was chosen to echo the finish of the lugs, underlining the aesthetic continuity between the case and bracelet. The latter, made of Grade 5 titanium, is lightweight, robust and very strong. It features a fine adjustment system, providing the valuable millimetres of play to allow the wearer to choose between a loose and casual or a snug, wrist-hugging fit.

As for the movement, this new GMT Sport is the first in a unified colour: the mainplate, bridges, globe, second time zone dial and 24-second indicator ring of the Tourbillon 24 Secondes at 1 o’clock are all in the same blue finish. Both the central suspended arched bridge and the Tourbillon Bridge are open-worked to highlight the three dimensional movement architecture of its intense blue finish.

Greubel Forsey New GMT Sport with Integrated Metal Bracelet

The choice on the one hand of a deep, matte blue and on the other, the polished components in titanium (bridges, globe) or steel (hands, power reserve) accentuate the strong contrasts within the movement itself and ensure perfect legibility.

Thanks to its 42mm case diameter (45mm on the bezel), the expression of the movement’s technicality is perfectly harmonious with the intuitive central hours and minutes display, second time zone at 10 o’clock, power reserve at 3 o’clock and rotating terrestrial globe at 8 o’clock.

Greubel Forsey New GMT Sport with Integrated Metal Bracelet hands on

With this new livery, more essential and refined than ever, Greubel Forsey offers a new means of expression to two of their signature creations. Their 3rd invention, the Tourbillon 24 Secondes is positioned between 12 o’clock and 2 o’clock. With its cage inclined at a 25° angle and completing a full rotation in 24 seconds, the Tourbillon 24 Secondes provides superior chronometric performance – in addition to the truly unique visual effect.

Greubel Forsey New GMT Sport with Integrated Metal Bracelet

Then, the terrestrial globe placed between 7 o’clock and 9 o’clock. More than any other, it embodies the three-dimensional time display championed by Greubel Forsey. Thanks to this invention which executes a complete rotation in 24 hours, universal time can be read easily, quickly and intuitively.

Seen from above the North Pole, a ring with 24- hour markings allows the local time to be read for all longitudes while also acting as a day/night indication. On the caseback side, a disc displaying city names surrounded by 2 rings allows the wearer to read UTC Universal and Summer Time for 24 cities in 24 major time zones. It also distinguishes those time zones applying summer time (on a light background) from those who don’t (on a dark background).

Technical details

Model: Greubel Forsey GMT Sport with Integrated Metal Bracelet
In titanium, blue movement
Limited edition

Movement
Hand-wound movement with 3 patents • Patents pending
GMT • 2nd time zone • rotating globe with universal time and day-and-night • universal time on 24 time zones • summer and winter time • cities observing summer time • GMT and Earth pushers • Tourbillon 24 Secondes • hours and minutes • small seconds • power-reserve

Movement dimensions
• Diameter: 36.90mm
• Thickness: 13.18mm

Number of parts
• Movement: 435 parts
• Tourbillon cage: 88 parts
• Weight of the cage: 0.38g

Number of jewels
• 63
• Olived-domed jewels in gold chatons

Chronometric power reserve
• 72 hours

Barrels
• Two coaxial series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension

Balance wheel
• Variable-inertia with gold mean-time screws (10mm diameter)

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Bridges and main plate
• Titanium
• Frosted and spotted, polished bevelling and countersinks, straight-grained flanks, blue treatment
• Multi-level, open-worked and polished suspended-arch bridge, polished bevelling and countersinks, straight-grained flanks
• Open-worked flat black polished tourbillon bridge, spotted, polished bevelling and countersinks, straight-grained flanks

Tourbillon
• Inclined at a 25° angle, 24-seconds rotation
• Light alloy cage pillars
• Titanium cage bridges
• Gold counterweight

Gearing
• Involute circle profile
• Tangential inclined gear on fixed wheel and on escape wheel pinion
• Inclined gear and profiled teeth on intermediate wheels of the sethands mechanism.

Displays
• Hours and minutes, on suspended-arch bridge
• Small seconds on disc
• 72-hours power reserve on a sector
• 24-seconds tourbillon rotation
• Rotating titanium globe with universal time
• Day-and-night
• 2nd time zone GMT
Movement side
• 24 time zones universal time
• Summer time

Exterior

Case
• Titanium with curved synthetic sapphire crystal
• Three-dimensional, variable geometry-shaped bezel, hand-polished with hand-finished straight graining
• Profiled lugs, screwed fixing
• Engraved pushers
• Transparent back with high domed synthetic sapphire crystal
• Titanium security screws
• Raised engraving “GMT Sport” and “Greubel Forsey”

Case dimensions
• Caseband diameter: 42.00mm
• Bezel diameter: 45.00mm
• Case height: 15.70mm
• Height on synthetic sapphire crystals: 17.80mm
• Water-resistant 10atm – 100m – 328ft (standard NIHS 92-20/SN ISO 22810:2010)

Crown
• Titanium and rubber with GF logo
• Colour-coded rubber capping, interchangeable

Dial

Front side
• Three-dimensional, variable geometry hour-ring, with luminescent hours and minutes indexes
• GMT indicator with raised engraving
• Power-reserve indicator, engraved and lacquered
• Tourbillon rotation indicator in gold
• Rotating globe with fixed day-and-night UTC indicator in synthetic sapphire, engraved and lacquered

Movement Side
• Synthetic sapphire disc displaying city names surrounded by 2 rings (UTC engraved on the case / Summer time engraved on a gold movement plate, lacquered and hand matt-lapped)
• “Summer time” plate with limitation number, raised engraving, hand matt lapped

Hands
Hours and minutes, curved profile, polished steel with Super-Luminova
2nd time zone GMT indicator, grey triangle
Small seconds, fixed red triangle
Power-reserve indicator, in polished steel
Aluminium 24-seconds double-tipped hand, black treatment

Strap and clasp
Rubber with text in relief, titanium folding clasp, engraved GF logo
3-row metal bracelet in titanium, folding clasp with integrated fine adjustment, engraved GF logo

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

The GMT Quadruple Tourbillon by Greubel Forsey is now available in a titanium version. Limited to 11 pieces, this ground breaking horological marvel incorporates new materials, new colours and new finishes.

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

The Quadruple Tourbillon is Greubel Forsey’s second Fundamental Invention and it averages out positional errors due to gravity in all situations, especially in stable wristwatch positions. To achieve this, the original tourbillon has been elevated to realise its full potential: inclined at 30°, doubled and then quadrupled.

The result, two synchronised Double Tourbillon 30° mechanisms, where a first cage, inclined at 30° and rotating in one minute, is nested within a second horizontal cage, completing a full rotation in four minutes. A spherical differential transmits the average timing rate of the four tourbillon cages, improving the overall chronometric performance of all the regulating organs.

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

The 46.5mm case of the GMT Quadruple Tourbillon is made of titanium, which is both stronger and lighter than steel, while also being extremely resistant to corrosion and magnetic fields. This exclusive limited edition in titanium with striking blue accents ensures modern and dynamic feel on the wrist.

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

The toughness of titanium presents a significant machining and hand finishing challenge for the components made from it, such as the GMT pusher or the folding clasp or the crown. In addition, new hand finishing details have been specially created for this timepiece.

The circular-grained hour ring with polished bevels and 72-hour chronometric power reserve indication appear for the first time in a brilliant blue. The mainplate is now frosted and spotted with polished bevelling, countersinks and straight-grained flanks, executed in a grey finish.

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

Set near eight o’clock, the rotating terrestrial globe in blue livery offers the simultaneous display of several different time zones: on the dial side, with a 24-hour ring around the Earth, for Day/Night indication and on the caseback side, displaying 24 major cities their respective time zones while distinguishing between those which use summer time (on a light coloured backdrop), and those which do not (on a dark backdrop).

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

The sapphire crystal window around the equator completes the timepiece, offering a complete view of the Earth in motion, with its continents immersed in the deep blue ocean waters, complementing the exquisite blue finish of the power reserve, hour circle and strap.

Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition

Technical details

Model: Greubel Forsey GMT Quadruple Tourbillon Titanium Limited Edition
Edition: 11 pieces in titanium

Movement

Hand-wound movement with 3 patents

Movement dimensions
• Diameter: 39.50mm
• Thickness: 13.00mm

Number of parts
• Movement: 705 parts
• Four tourbillon cages: 260 parts
• Total weight of the cages: 2.25g
• Spherical differential: 28 parts

Number of jewels
• 84
• Olived-domed jewels in gold chatons

Chronometric power reserve
• 72 hours

Barrels
• Three series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension

Balance wheel
• Variable-inertia with white gold mean-time screws (10.70mm diameter)

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Main plates
• Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, grey treatment

Bridges
• Nickel silver, frosted and spotted, polished bevelling and countersinks, straight-grained flanks, grey treatment
• Gold plate engraved with the individual number
• Flat black polished gold plates with relief engraved text, polished bevelling and countersinks, straight-grained flanks
• Four flat black polished steel tourbillon bridges, hand-polished bevelling and countersinks, straight-grained flanks

Inner tourbillons
• Inclined at a 30° angle, 1 rotation per minute

Outer tourbillons
• 1 rotation in 4 minutes
• Hand-bevelled and open-worked cage pillars
• 1 gold counterweight per double cage bearing the individual number of the timepiece

Gearing
• Involute circle profile
• Conical gearing with profiled teeth

Displays
• Hours and minutes
• Small seconds (mean performance)
• 72-hours power reserve on a sector
• 2nd time zone GMT
• 24 time zones universal time
• Rotating titanium globe with universal time
• Cities observing summer time
• Day-and-night

Exterior

Case
• In titanium with asymmetrical convex synthetic sapphire crystal
• Transparent back with asymmetrical convex synthetic sapphire crystal
• Lateral window with shaped synthetic sapphire crystal
• Three-dimensional, variable geometry-shaped lugs
• Raised polished engraving “GMT Quadruple” and “Greubel Forsey” on a hand-punched background
• Gold security screws
• Polished bezel, caseband with hand-finished straight graining
• Titanium GMT pusher with raised engraving on a hand-punched background
• Engraved individual number

Case dimensions
• Diameter: 46.50mm
• Height: 17.45mm

Water resistance of the case
• Water-resistant 3atm – 30m – 100ft (standard NIHS 92-20/SN ISO 22810:2010)

Crown
• In titanium with engraved GF logo

Dial
• Multi-level in gold, anthracite colour
• Gold hour-ring and power reserve, circular-grained with polished bevelling, blue treatment
• Gold hour markers
• GMT in gold, hand matt lapped
• Small second, circular-grained

Hands
• Hours and minutes in polished gold, with Super-LumiNova
• Small seconds in polished steel, black treatment
• Power-reserve in polished steel, hand-polished countersink
• 2nd time zone GMT indicator, red

Strap and clasp
• Rubber or hand-sewn alligator
• Titanium folding clasp, engraved with the GF logo

Greubel Forsey Balancier Contemporain in 5N Red Gold

In 2019, Greubel Forsey opened a new chapter in its history by presenting the particularly compact Balancier Contemporain, the first Greubel Forsey timepiece with a diameter of 39.6mm.

Embodying all the codes of the iconic Swiss watch Atelier, the Greubel Forsey Balancier Contemporain is a real tour de force. Following the initial white gold version, it is now offered in a new 5N red gold case with a rich, multi-level contrasting dial.

Greubel Forsey Balancier Contemporain in 5N Red Gold

Composed of 255 parts, all created and hand finished in the Greubel Forsey spirit of fine craftsmanship, the Balancier Contemporain represents a true architectural accomplishment. The movement has been created especially to fit the specified dimensions, the challenge being not only to house the large balance wheel within a small space, but also more importantly to achieve a harmonious creation with optimal proportions, crafted with precise attention to detail.

The 5N red gold version of the Balancier Contemporain plays on the differences in levels, materials, volumes and finishes, while perfectly illustrating the world of Greubel Forsey.

At 6 o’clock, the large balance wheel – developed and built entirely within the Greubel Forsey Atelier – catches the eye. Its impressive 12.6mm diameter gives it optimal performance. It is reflected against the backdrop of a black-polished gold plate, reinforcing the sense of depth to the movement.

The regulating organ is equipped with a balance wheel stop function that can be activated by pulling the crown. The six gold adjustable screws have been placed inside the felloe to allow for a very precise adjustment, thereby limiting air friction and any resulting disturbance, ultimately providing improved results, better chronometric performance and easier adjustment.

Greubel Forsey Balancier Contemporain in 5N Red Gold

With a diameter of only 39.6mm and a height of 12.21mm, the proportions of the Balancier Contemporain make it particularly unique, especially as Greubel Forsey timepieces usually have a larger diameter. The red gold case is enhanced by three-dimensional variable geometry-shaped lugs that create subtle and elegant curves. These unique proportions are accentuated by contrasting finishes: a fully polished bezel and lugs, with a satin-brushed caseband and caseback. Above the bezel, the high-domed sapphire crystal adds further depth to the movement.

The Greubel Forsey Balancier Contemporain in Red Gold boasts a black polished gold plate where the balance wheel takes pride of place at 6 o’clock. Higher up, a frosted and bevelled bridge reveals the barrel drum with Greubel Forsey engraving. At 8:30, the small seconds hand moves on a slightly higher level. Higher up still, a delicate hand-frosted bridge displays the 72-hour power reserve, which is brought to life by a slender blued steel hand.

Further east, at 2 o’clock, the contrasting colours accentuate the temporal indications, and the off-centre position of the hour/minute dial is accentuated by the anthracite finish of the minute circle. Positioned on a raised tripod bridge, the hours and minutes are displayed by two blued steel hands with a hand-polished flat surface and countersinks. The voyage ends with an opening in the dial that allows a glimpse of the large balance wheel, with its bevelled and black-polished bridge.

Greubel Forsey Balancier Contemporain in 5N Red Gold

The caseback reveals all the mastery of traditional artisanal hand finishing of Greubel Forsey timepieces. A circular engraved red gold disc is displayed in the centre, surrounded by a white gold bridge, which features the Atelier’s key values written in engraved and black-polished letters, along with the characteristic olive-domed jewels set in gold chatons.

Technical details

Model: Greubel Forsey Balancier Contemporain in 5N Red Gold

Movement
Hand-wound movement

Movement dimensions
• Diameter: 32.40mm
• Thickness: 9.20mm

Number of parts
• Movement: 255 parts

Number of jewels
• 33
• Olived-domed jewels in gold chatons

Chronometric power reserve
• 72 hours

Barrels
• Two series-coupled fast rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension
• Barrel with relief engraving “Greubel Forsey”

Balance wheel
• In-house variable-inertia with 6 gold mean-time screws (12.60mm diameter)
• Stop balance activated by crown

Frequency
• 21’600 vibrations/hour

Balance spring
• Phillips terminal curve
• Geneva-style stud

Main plates
• Titanium, frosted and spotted, straight-grained flanks

Bridges
• Nickel silver, frosted and spotted with polished bevelling and countersinks, straight-grained flanks, nickel-palladium treatment
• Power-reserve bridge with galvanic growth
• Flat black polished steel balance wheel bridge, hand-polished bevelling and countersinks, straight-grained flanks
• Flat black polished gold plate under the balance wheel, polished bevelling and countersinks, straight-grained flanks
• Flat black polished gold plate on the movement side with relief engraved text, polished bevelling and countersinks, straight-grained flanks with apparent gold chatons
• Central gold plate, “GF” engraved with the individual number

Gearing
• Involute circle profile

Displays
Hours and minutes
Small seconds
72-hours power reserve on a sector

Case
In 18k 5N red gold with high domed synthetic sapphire crystal
Transparent back with high domed synthetic sapphire crystal
Three-dimensional, variable geometry-shaped lugs
Raised polished engraving “Balancier” and “Greubel Forsey” on a hand-punched background
Gold security screws
Hand-polished bezel, caseband with hand-finished straight graining
Hand-engraved individual number
Diameter: 39.60mm
Height: 12.21mm
Water resistance: 3atm – 30m – 100ft (standard NIHS 92-20/SN ISO 22810:2010)

Crown
In 18k 5N red gold with engraved and black lacquered GF logo

Dial
Multi-level in gold, rhodium-coloured, black minute-circle, with a visual opening for the balance wheel, polished bevel
Small seconds in gold, rhodium-coloured, polished bevel
Power-reserve in gold, engraved and black lacquered, hand matt lapped

Hands
Hours and minutes, small seconds and power-reserve in polished blued steel, hand-polished countersinks

Strap and clasp
Hand-sewn alligator
In 18k 5N red gold pin buckle, hand-engraved with the GF logo