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QP à Équation

Greubel Forsey 2014

Greubel Forsey: QP à Équation

When Greubel Forsey "tackles" a complication, it is always with the aim of delivering a result that is both technically and aesthetically accomplished, as once again confirmed by this year's perpetual calendar model. Adjustable in both directions, it incorporates an equation of time and the now famous 24-second tourbillon inclined at 25°. The key to this innovation is a coding mechanism which changes the different indications on the front and back of the watch. Simplicity itself to use, this is no less another tour de force from the brand.

Movement | hand-wound Manufacture GF07 calibre with patented 24-second tourbillon inclined at 25°, Perpetual Calendar and equation of time, 570 parts, 37 mm ø,9.55 mm high, 21,600 vibrations/hour frequency, two barrels, 72-hour power reserve

Functions | hours, minutes, small seconds, 24-second tourbillon, bi-directional perpetual calendar with date, day and month, leap year indicator, day/night indication (24h with red zone), power-reserve indicator, function selection, equation of time on the back showing seasons, solstices, equinoxes and current year in four digits

Dial | gold, multiple tiers

Case | white gold, asymmetric convex sapphire crystal, transparent back with asymmetric flat sapphire crystal