Greubel Forsey – Balancier Convexe S²: The Final Chapter
This year, Greubel Forsey is unveiling the final two versions of the “Balancier Convexe S²”—one in black ceramic and 5N red gold, the other in white ceramic. This brings to a close the development of a caliber that has been refined and revised several times over the past five years.
The two final models of Greubel Forsey’s “Balancier Convexe S²” look very different, but are based on the same mechanical platform and are each produced in a limited edition of eleven pieces. Featuring the characteristic convex case (41.5 millimeters) and powered by a hand-wound movement with a balance wheel inclined at a 30-degree angle, they place the movement in particularly striking focus.
This launch marks the beginning of the caliber’s final phase: production will be permanently discontinued in 2026, bringing to a close a significant chapter in Greubel Forsey’s mechanical development.
From the very beginning, the “Balancier Convexe S²” was conceived as a fully integrated timepiece, with the case geometry and movement structure developed in tandem. Its convex design follows the natural curve of the wrist, combining excellent readability with exceptional comfort.
The movement, comprising 301 components and offering a 72-hour power reserve, draws its energy from two high-speed, coaxial barrels. The finishing remains a key feature: titanium bridges and plates are satin-finished and hand-finished with polished edges, recesses, and finely crafted transitions.
The functional layout remains unchanged: hours and minutes are displayed via a floating arched bridge, complemented by a small seconds sub-dial and a sector-shaped power reserve indicator.
These final remarks also mark the transition to an almost entirely new collection.
