GMT Sport

155 pièces · 2019–2022

discover

Or Rouge · Titane

Greubel Forsey’s GMT features a bezel without the cardinal values of the Maison, which are usually engraved there. The new profile has a horizontal satin finish, with the edges of the bezel being polished, all soft curves and plays of light – and hand-finished, like all parts of a Greubel Forsey timepiece. This ergonomic design is pursued in the new bracelet of the GMT Sport, the first ever metal bracelet created by Greubel Forsey. Entirely developed in-house and designed specifically for this model, it is fully integrated into the case of the GMT Sport and profiled to follow the ovoid contours of its case and bezel. The globe positioned between 7 and 9 o’clock incarnates the three-dimensional display of time dear to Greubel Forsey. Thanks to this invention, which makes one rotation in 24 hours, universal time can be read in a way that is simple, direct and intuitive. A ring with 24-hour markings allows the local time to be read for all longitudes, taking account of the day/night indicator.

Invention

GMT Sport

The Tourbillon 24 Secondes uses a fast rotation speed and inclined angle to solve the problem of critical positions of the oscillator in relation to gravity. The 25˚ angle and the rapid rotation of the tourbillon cage significantly improve the chronometric performance of a system containing only one tourbillon, especially in stable positions. Consequently, we had to develop an inclined gearing profile and an ultra-light tourbillon cage to resolve the considerable mechanical constraints imposed by this system.