Greubel Forsey Balancier Convexe S2 41.5 mm

Greubel Forsey presents a new 41.5 mm diameter version of the Balancier Convexe S2 watch. Presented in a curved case made of titanium, this timepiece is available in two dial versions.

Greubel Forsey Balancier Convexe S2 41.5 mm

Introduced in 2021 in Dubai, Balancier Convexe S2 stands out with its strong, modern, innovative and architectural identities. This watch is now available in two editions, each in a brand new 41.5 mm case.

The Balancier Convexe S2 showcases its famous Convexe profile. Introduced in 2019, this case profile offers comfort and cutting-edge ergonomics. The entire case is double-curved, both front and back.

On the back, it offers total comfort, hugging the curve of the wrist. On the front, the convex profile of the bezel plunges along the vertical axis of the timepiece, at both 12 and 6 o’clock.

Along the 12 and 6 o’clock axis, the hour-ring drops away beneath the sapphire crystal revealing an unprecedented open space below the glass.

The lower quarter of the timepiece prominently features the collection’s signature large balance wheel. It is inclined at 30°, as if suspended from the straight-grained, open-worked bridge with its hand-polished bevelling.

In the apex, by contrast, the hour-ring is at its highest possible to the sapphire crystal. Enhanced in luminescent white, the hour and minute hands have never appeared so high. The double open-worked “arch bridge” with suspended wheels reveals the movement’s patented mechanics.

The Greubel Forsey Balancier Convexe S2 41.5 mm is available in two versions: Grey and Blue.

In the first version, multiple shades of grey recall urban architecture. Greubel Forsey deploys a wide range of finishes to magnify the slightest chromatic variation, from frosted plates to straight-grained and mirror-polished surfaces. An isolated coloured zone stands out for the power reserve indication.

Greubel Forsey Balancier Convexe S2 41.5 mm Titanium Grey

In the blue version, Greubel Forsey plays with direct contrast. With a light-coloured mainplate, a midnight-blue hour-ring and elevated luminescent hour-markers standing out, the large balance and small seconds at 8 o’clock revealed on the inclined surface, the composition is as soft as it is contrasting.

Greubel Forsey Balancier Convexe S2 41.5 mm Titanium Blue

Made of titanium, the case is just 41.5 mm in diameter. It can be fitted on a textile-style textured rubber strap or full titanium bracelet. The texts and unique design of the barrel cover blend seamlessly into the redesigned case.

Greubel Forsey Balancier Convexe S2 41.5 mm Titanium Watch

The new 41.5 mm Balancier Convexe S2 in titanium will be produced as only 88 pieces of each version from 2023.

Technical details

Model: Greubel Forsey Balancier Convexe S2 in Titanium

Overall diameter: 37.00 mm
Thickness: 10.05 mm
Number of parts: 301 parts
Escapement platform: 68 parts
Number of jewels: 43; 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
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 plates
Frosted, polished bevelling and countersinks, anthracite or blue treatment according to the version
Multi-level, openworked suspended-arch bridge, black treatment, straight-grained and polished, polished bevelling and countersinks

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

Escapement platform
Inclined at a 30° angle
Frosted, polished countersinks, large straight-grained inclined facet
Multi-level, openworked balance wheel bridge, straight-grained and polished, polished bevelling and countersinks

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

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


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: 41.50 mm
Bezel diameter: 44.00 mm
Case height: 12.85 mm
Height on synthetic sapphire crystals: 14.80 mm
Water-resistance: 10 atm – 100 m – 328 ft (standard NIHS 92-20/SN ISO 22810:2010)
Crown: Titanium, polished, frosted and straight-grained, with GF logo

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

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

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