Jaeger-LeCoultre Duometre Quantieme Lunaire

About This Watch

The Jaeger-LeCoultre Duometre Quantieme Lunaire applies the revolutionary Dual-Wing concept to a moon phase calendar complication, creating a watch of extraordinary technical sophistication. Like its chronograph sibling, the caliber 381 features two independent mechanisms: one wing drives the time display with its distinctive jumping seconds, while the other powers the calendar functions including a moon phase accurate to one day in 122 years. The separation of functions means the calendar indications are powered independently of the timekeeping, a unique approach in watchmaking. The 42mm white gold case frames a beautifully proportioned silver dial where the two power reserve indicators — one for each wing — flank the dial at three and nine o'clock. The moon phase display is rendered with meticulous detail, showing both a realistic lunar surface and a starfield background. The date is displayed via a retrograde hand in a sector at six o'clock. The 47-jewel movement is finished to the highest standards of the JLC Manufacture, with every component hand-decorated. The Duometre collection sits at the apex of JLC's regular production, just below the Hybris Mechanica pieces, and demonstrates why the brand is known as the watchmaker's watchmaker. This is a watch that earns respect from the most discerning collectors and horologists.