Greubel Forsey reinterprets its first invention: the Double Tourbillon 30°. This exceptional platinum model provides a full immersion into the beating heart of the brand’s watchmaking expertise. Its sapphire crystal and hour indicator, along with openworked hands, provide a spectacularly clear vision of the intricate choreography performed by the gear trains and the fascinating spinning of the double 30° tourbillon cage. Four coaxial barrels, coupled with a spherical differential, ensure a 120-hour power reserve.