Greubel Forsey QP à Equation now with rhodium-toned gold dial

After exploring the tourbillon and improving it in various ways (by increasing the inclination of the cage, using not one but two or even four tourbillons, or changing the usual one-minute rotation to a faster 24-second cycle), It was time for Greubel Forsey to focus their mechanical creativity on something different… a choice made to bring a new perspective to one of the most traditional complications – the perpetual calendar. Launched in 2015, the Greubel Forsey QP à Equation now features a new rhodium dial. high quality luxury watch

Back in 2015, Robert Greubel and Stephen Forsey decided it was time for the company to take a new direction and explore different horological complications beyond the iconic tourbillon. Although they already had a complicated GMT watch in their catalogue, they opted for a perpetual calendar watch that best represents Haute Horlogerie. Complex but well known, the question is: how to redefine, how to reinvent one of HH’s most widely used functions? Greubel Forsey QP à Equation is a perpetual calendar with an equation of time, just like Greubel Forsey, which means that it is not just a “simple” QP.

On the dial side, all the calendar indications of the Greubel Forsey QP à Equation are located in a small area at 4, displayed by 3 apertures – one for the day of the week, one for the date and one for the month. Highly clear and intuitive, the display is deceptively simple, but in fact it is Greubel Forsey’s seventh invention, the “Computer Mecanique”. Below the circular area containing these indications (also visible on the back, with the equation of time) is a mechanical brain. The sub-assembly consists of 25 components, mainly consisting of a rotary coaxial encoding element, supplemented by a system of programmed movable parts. Depending on its geometry and rotational speed, each element generates its own instructions in a cyclic, pre-programmed fashion. In QP à Equation, the mechanical computer is programmed to automatically display all indications from the perpetual calendar down to the equation of time: seasons, equinoxes, solstices, equation of time, and the date, day of the week, month and four-digit year.

Another major improvement concerns the adjustment of these calendar indications. As we all know, traditional QP is a sensitive mechanism, which can easily crash or block if it is not adjusted properly. On the Greubel Forsey QP à Equation watch, all displays can be adjusted forwards and backwards at any time of day via the crown (meaning no unsightly buttons or recessed buttons on the case). Finally, as is always the case with Greubel Forsey, the movement of the QP à Equation is finished and decorated in an uncompromising manner – undoubtedly one of the most detailed decorations in the entire industry. perfect swiss watch

The rest of the movement is not far behind, as regulation is done by a 24-second tilting tourbillon (the 25° angle and rapid rotation of the tourbillon cage significantly improves chronometric performance), with a power reserve of 72 hours. The display of this QP à Equation, as Greubel Forsey has always done, somehow “explodes”: hours and minutes in the center, small seconds below the tourbillon, date indication at 4, leap year at 6, power Small discs next to small seconds at 2 and 24 indicate day and night hours). More indications can be seen on the movement side: the equation of time (two sapphire crystal discs driven by a mechanical computer that rotate independently to show the changing time difference over the course of the year) and the year, displayed in 4 digits.

In 2017, the Greubel Forsey QP à Equation watch was given a new look with a rhodium dial (except for the anthracite version). The case is the same, in white gold, measuring 43.5mm in diameter and 16mm high.

Technical Specifications – Greubel Forsey QP À Equation
Case: Diameter 43.5mm x Height 16mm – 18k white gold, polished and brushed – Double-sided sapphire crystal – Water resistant to 30m
Movement: Manufacture movement – manual winding – 624 components – tourbillon 24 seconds inclined, frequency 3Hz – 2 barrels 72 hours power reserve – 75 rubies
Displays: Hours, Minutes, Small Seconds, Power Reserve, QP with Day, Date, Month, Leap Year, Day/Night Indication, Selected Function Indication, Equation of Time, 4-digit Year
Strap: black alligator leather with 18k white gold folding clasp