The extraordinarily complicated Greubel Forsey QP à Équation is now available in a new red gold version with a warm-toned chocolate-colou...
The extraordinarily complicated Greubel Forsey QP à Équationis now available in a new red gold version with a warm-toned chocolate-coloured dial.
This model integrates the equation of time with a bidirectional perpetual calendar, a tourbillon, a power reserve indicator and a function selector.
In designing it, the priority of Greubel Forsey was to simplify a complete perpetual calendar display and make it much easier to set by simply using the bi-directional crown.
To achieve this result, Greubel Forsey invented a sort of "mechanical computer", a sophisticated coding mechanism fully integrated within the 3 Hz (21,600 vibrations per hour) hand-wound movement.
A stack of cams with movable fingers shift the indications on the dial and caseback of the timepiece. The month’s cam changes the month, displayed in a window on the front and also moves the equation of time disc on the back. The years’ cam controls the leap year indication on the front and also the millesime and seasons on the back.
A total of 15 indications are displayed simultaneously on both dial and caseback.
The dial side 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 72-hour chronometric power reserve.
On the movement side, this timepiece displays the equation of time with the months, seasons, solstices and equinoxes, as well as the calendar year.
One of the rarest and most fascinating horological complications, the equation of time serves to display the difference between mean solar time, corresponding to civil or standard hours and minutes, and true solar time, meaning the actual solar hours and minutes.
The timekeeping performance comes from Greubel Forsey’s third invention: the Tourbillon 24 Secondes, with its unique fast rotational speed and 25° inclined angle significantly improve the chronometric performance.
The multi-level chocolate-coloured gold dial of the Greubel Forsey QP à Équation is framed by a 43.50 mm x 16.00 mm red gold case. greubelforsey.com
This model integrates the equation of time with a bidirectional perpetual calendar, a tourbillon, a power reserve indicator and a function selector.
In designing it, the priority of Greubel Forsey was to simplify a complete perpetual calendar display and make it much easier to set by simply using the bi-directional crown.
To achieve this result, Greubel Forsey invented a sort of "mechanical computer", a sophisticated coding mechanism fully integrated within the 3 Hz (21,600 vibrations per hour) hand-wound movement.
The dial side 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 72-hour chronometric power reserve.
On the movement side, this timepiece displays the equation of time with the months, seasons, solstices and equinoxes, as well as the calendar year.
One of the rarest and most fascinating horological complications, the equation of time serves to display the difference between mean solar time, corresponding to civil or standard hours and minutes, and true solar time, meaning the actual solar hours and minutes.
The multi-level chocolate-coloured gold dial of the Greubel Forsey QP à Équation is framed by a 43.50 mm x 16.00 mm red gold case. greubelforsey.com
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