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