The ultimate perpetual calendar
At the heart of the QP à Équation lies Greubel Forsey’s seventh invention, the Mechanical Computer, which brings a totally new interpretation to some of the calendar functions incorporated in age-old astronomical clocks. It is composed of a set of coding wheels superimposed in a coaxial manner, as well as removable fingers programmed by this ingenious system.
The dial of the QP à Équation indicates leap years, the 24 hours of the day and night, the day of the week, the large date, the month, the hours, the minutes and the seconds, as well as the chronometric 72-hour power reserve. On the bridge side, this timepiece displays the equation of time with the months, seasons, solstices and equinoxes, as well as the calendar year.
The QP à Équation provides a simplified linear reading. Herein lies the happy paradox of this piece: it is an ultra-complicated timepiece with its tourbillon and its complete equation of time perpetual calendar function, but it is as easy to use and adjust as a watch with three hands. This system is extremely easy to adjust in both directions without damaging the mechanism.
QP à Équation
Bidirectional perpetual calendar, day, date, month, calendar year and leap year, day/night, equation of time with month, season, solstice and equinox, function selector, Tourbillon 24 Secondes, hours and minutes, small seconds, power reserve.
Download the data sheet- Case material 5N red gold
- Limitation 2-3 pieces/year
- Chronometric power reserve 72 hours
- Case diameter 43.5 mm
- Water resistance 3 ATM - 30 m - 100 ft
- Number of parts 624
- Frequency 21,600 vibrations/hour
- Height (incl. crystal) 16 mm
Collection
45.5 mm Titanium 55 pieces (2023-2027)
43.5 mm Titanium 2 pieces/year
43.5 mm White gold 2-3 pieces/year
39.6 mm 5N red gold 69 pieces (2019-2024)
37.9 mm White gold and tantalum 11 timepieces