Description

The present watch is the Greubel Forsey Balancier Convexe S2 in Carbon, a high-performance, architectural masterpiece that pushes the boundaries of material science and chronometric precision. This limited edition is defined by its unique Convexe case geometry—a complex, three-dimensional form that curves both on the vertical and horizontal axes to follow the natural contour of the wrist. Crafted from carbon and titanium, the 41.5 mm case combines extreme lightness with the brand’s legendary hand-finishing, featuring a variable-geometry bezel and a high-domed synthetic sapphire crystal.

At the heart of the openworked display is the 30° inclined Greubel Forsey balance wheel system. By inclining the regulating organ, Greubel Forsey minimizes the negative effects of gravity on timekeeping in stable positions, a hallmark of their pursuit of chronometric perfection. The balance wheel itself is a large, 12.60 mm in-house variable-inertia design with six gold mean-time screws. The movement architecture is dominated by a multi-level, suspended-arch bridge in black-treated titanium, which supports the curved, polished steel hands filled with Super-LumiNova.

The hand-wound movement, comprising 303 parts, is a showcase of haute horlogerie finishing. The bridges and main plates feature frosting, black treatment, and hand-polished bevelling. Two coaxial, fast-rotating barrels provide a 72-hour chronometric power reserve, with one barrel equipped with a slipping spring to prevent excess tension. The power reserve is indicated by a red triangle on a dedicated sector, while the small seconds are displayed on a gold dial with a polished bevel.

Every detail of the Balancier Convexe S2 is executed with obsessive care, from the olived-domed jewels set in gold chatons to the relief-engraved text on the barrels. The escapement platform alone consists of 68 parts and is inclined at a 30° angle on a frosted titanium base. Water-resistant to 50 meters and fitted with a hand-finished carbon crown, this timepiece is a definitive statement of modern independent watchmaking—where avant-garde carbon construction meets the most rigorous traditions of hand-finishing and mechanical innovation.

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.