Description

The present watch is the Greubel Forsey Balancier Convexe S2 in titanium, a contemporary chronometric sculpture that unites high-performance engineering with the Maison’s uncompromising hand-finishing. Designed around the signature Convexe case geometry, the watch curves ergonomically across both vertical and horizontal axes, delivering exceptional wrist presence and comfort.

The titanium case measures 41.50 mm at the caseband and 44.00 mm at the bezel, with a height of 12.85 mm (14.80 mm including the high-domed sapphire crystals). Its three-dimensional, variable-geometry bezel is hand-polished and straight-grained, while profiled lugs and titanium security screws emphasize its architectural build. Raised engravings reading “Balancier Incliné” and “Greubel Forsey” reinforce the technical identity. Water resistance is rated to 100 meters (10 ATM).

At the heart of the watch is Greubel Forsey’s 30° inclined balance wheel system, engineered to reduce the effects of gravity in stable positions and enhance chronometric stability. The in-house variable-inertia balance wheel (12.60 mm diameter) features six gold mean-time screws and operates at 21,600 vibrations per hour, regulated by a Phillips terminal curve balance spring with Geneva-style stud.

The hand-wound manufacture movement comprises 301 components and 43 jewels, including olived-domed jewels set in gold chatons. Measuring 37.00 mm in diameter and 10.05 mm in thickness, it delivers a 72-hour chronometric power reserve via two coaxial fast-rotating barrels mounted in series, one fitted with a slipping spring to prevent excess tension. The escapement platform, inclined at 30°, consists of 68 components and is crafted in titanium with frosted surfaces, polished countersinks, and a straight-grained inclined facet.

The movement architecture is highlighted by a multi-level, openworked suspended-arch bridge in black treatment, straight-grained and polished with hand-executed bevelling. Bridges and main plates in titanium feature anthracite or blue treatment depending on the version, complemented by frosted surfaces and polished bevels. On the reverse, a gold plate engraved with the limitation number and finished with circular graining adds exclusivity.

The dial is a three-dimensional composition of variable geometry elements. A polished hour ring with engraved and lacquered minute circle surrounds applied hour indexes filled with Super-LumiNova. A gold small seconds dial with polished bevel provides contrast, while the power reserve is displayed on a sector with a red triangle indicator. Curved-profile polished steel hands, filled with Super-LumiNova, ensure clarity against the architectural backdrop.

The titanium crown, finished with polished, frosted, and straight-grained surfaces and engraved with the GF logo, completes this refined yet technically assertive timepiece.

The Balancier Convexe S2 in titanium embodies Greubel Forsey’s philosophy: elevate chronometric performance through mechanical innovation, and express it through sculptural design and uncompromising artisanal finishing.

Greubel & Frosey – bio

Greubel Forsey is a story of passion and family. Both the French and the English watchmakers have followed their paternal and finally, these determined kids, joined their routes as respectable watchmakers at the famous Renaud & Papi (complex movement manufacturer).
From 1990, they worked as independent watchmakers and later founded CompliTime in 2001 to produce complicated movements for distinguished watches factories.
The Greubel Forsey adventure officially started in 2004 when they presented the Double Tourbillon 30° Vision at Baselworld. The success from this date brought the Richemont Group to acquire a minority stake in the company helping the brand to various accomplishments such as the Tourbillon 24 Secondes, the Quadruple Tourbillon, the Double Balancier 35° and the signature GMT model.
They share a common view and transcript their spirit into producing around a 100 timepieces per year with surprising movements and creative designs.