he new QP Balancier by Greubel Forsey is the purest, most intuitive perpetual calendar ever – uniting 12 functions and indications in a single crown, with no additional pushers, no crown positions to memorise, and no risk at any time. Powered by the patented Mechanical Computer and multiple security systems, it adjusts instantly in either direction, restarts instantly after months unwound, and stays programmed until the year 2100. Featuring our 30° inclined balance wheel, it is limited to 22 timepieces in white gold.

For centuries, the perpetual calendar has been revered as one of watchmaking’s most prestigious complications. Yet it often came with compromises: fragile mechanisms, cryptic interfaces, and laborious resets whenever the watch stopped.

Greubel Forsey set out to change that. In 2015, the QP à Équation introduced the Mechanical Computer – our seventh Fundamental Invention – a 25-part mechanical brain that “knows” the Gregorian calendar rules, ensuring perfect synchronisation of every display.

The new QP Balancier distills this breakthrough into its most refined form. It unites 12 indications – hours, minutes, seconds, power reserve, day, date, month, leap year, day/night, 24-hour display, calendar year, and the patented function selector – all operated by a single crown for effortless time and calendar setting. The result is the only perpetual calendar that requires no handbook to operate.

Hidden pushers? Multiple crown positions? Forward-only adjustment? Lengthy resets? Every limitation of traditional perpetual calendars has been eliminated. The QP Balancier turns freely in both directions at any time of day, corrects instantly even after months unwound, and locks safely during the vulnerable midnight changeover, with a visible red zone for extra security. Programmed correctly until February 28, 2100, it needs only a simple Atelier adjustment to remain accurate for another century.

Aesthetically, the QP Balancier embodies purity. Its multi-level gold dial presents day, large date, and month in a single intuitive line, flanked by leap year and day/night indicators. Every element is reduced to the essentials for instant legibility and visual harmony.

The experience goes beyond sight: the quick-correction mode transforms date-setting into a tactile pleasure, each crisp jump through the crown letting the wearer feel the mechanism come alive – a moment of connection between human and machine.

The 45.1 mm white gold case, just 14.75 mm high, houses the 12.6 mm balance wheel inclined at 30°, a high-mass, variable-inertia balance with gold mean-time screws for superior chronometric performance.

Each of its 612 components is hand-finished to the Atelier’s uncompromising standards – bevelled, black-polished, frosted, or straight-grained – with twin fast-rotating barrels delivering a 72-hour chronometric power reserve.

Limited to 22 timepieces in white gold, the QP Balancier is the most practical, reliable, and user-friendly perpetual calendar ever created – without a single compromise in chronometry, craftsmanship, or beauty.

TECHNICAL SPECIFICATIONS

Bidirectional perpetual calendar • day, date, month, calendar year, leap year, day-and-night • function selector • 30° inclined Greubel Forsey balance wheel system • hours and minutes • small seconds • power-reserve

• MOVEMENT DIMENSIONS • Diameter: 40.80mm • Thickness: 10.40mm

• NUMBER OF PARTS • Movement: 612 parts • Escapement platform: 59 parts

• NUMBER OF JEWELS • 78 • Olived-domed jewels in gold chatons

• CHRONOMETRIC POWER RESERVE • 72 hours

• BARRELS • Two coaxial series-coupled fast-rotating barrels (1 turn in 3.2 hours), one of which is equipped with a slipping spring to avoid excess tension

• BALANCE WHEEL • In-house variable-inertia with 6 gold mean-time screws (12.60mm diameter)

• FREQUENCY • 21’600 vibrations/hour

• BALANCE SPRING • Phillips terminal curve • Geneva-style stud

• BRIDGES AND MAIN PLATES • Nickel silver, frosted and spotted, with polished bevelling and countersinks, straight-grained flanks, nickel-palladium and anthracite treatments • Three engraved gold plates, one with the limitation number • Synthetic sapphire mechanical computer and calendar year bridges

• ESCAPEMENT PLATFORM • Inclined at a 30° angle, flat black polished steel, polished bevelling and countersinks, straight-grained flanks • Polished steel pillars • Flat black polished and barrel polished steel balance wheel bridge

• GEARING • Involute circle profile • Inclined gear with profiled teeth on fourth wheel

• DISPLAYS • Hours and minutes • Small seconds on disc • 72-hours power reserve on a sector • Day of the week, large date and month • Leap year • Day-and-night on disc (with red safety zone) • Function selection (QP calendar or HM time adjustment) • Calendar year (Back display)

• EXTERIOR CASE • In white gold with high domed synthetic sapphire crystal • Transparent back with high domed synthetic sapphire crystal • Hand-polished bezel, caseband with hand-finished straight graining • Gold security screws • Raised polished engraving “QP Balancier” and “Greubel Forsey” on a hand-punched background

• CASE DIMENSIONS • Caseband diameter: 44.70mm • Bezel diameter: 45.10mm • Case height: 10.55mm • Height on synthetic sapphire crystals: 14.75mm

• WATER RESISTANCE OF THE CASE • Water-resistant 3atm - 30m - 100ft (standard NIHS 92-20/SN ISO 22810:2010)

• CROWN • In white gold with engraved GF logo

• DIAL • Multi-level in gold, anthracite colour • Gold perpetual calendar aperture with polished raised engraving • Leap year, day-and-night, small second, power-reserve and function selector indicators in gold, circular-grained, straight-grained flanks with polished bevel

• HANDS • Hours and minutes in polished steel, with Super-LumiNova • Power-reserve and leap year in polished steel, hand-polished countersink, flat black polished head

• STRAP AND CLASP • Hand-sewn textured rubber • White gold folding clasp, hand-engraved with the GF logo