Jaeger-LeCoultre Duomètre à Quantième Lunaire

Duomètre à Quantième Lunaire is a wristwatch by Jaeger-LeCoultre.

This was the second mainstream model in the Jaeger-LeCoultre Duomètre family and was presented in 2010. It is a model with annual calendar and moon phase indication. The version shown here has a dial from Grand-Feu enamel.

The Dual-Wing movement is characterized by two separate power sources with a power reserve of each 50 hours each: The first, which is regulated by the escapement and the balance wheel, is used exclusively for the precise measurement of passing time, while the second source of energy is devoted to the indication of the functions: hours, minutes, seconds, annual calender and moon phases. Their synchronization is ensured by the hand mechanism of the seconde foudroyante. Winding the crown clockwise powers the escapement and counter-clockwise powers the display functions.

The 42 mm Quantième Lunaire was introduced in 2010. A 40.5 mm version was introduced at SIHH in 2012. At SIHH in 2014, the company introduced the limited-edition 40.5 mm white gold/enamel dial model.

Reference:

Q604.04.20, 42 mm yellow gold, ivory dial, limited to 300 pieces (2010)

Q604.24.20, 42 mm yellow gold, silver dial, partially skeletonized, limited to 300 pieces

Q604.25.20, 42 mm rose gold, silver dial, partially skeletonized

Q604.25.22, 42 mm rose gold, silver dial, partially skeletonized, limited to 200 pieces

Q604.35.70, 42 mm white gold, matte black dial, limited to 200 pieces (2011)

Q604.25.21, 40.5 mm rose gold, white dial (2012)

Q604.34.20, 40.5 mm white gold, silver dial

Q604.35.E1, 40.5 mm white gold, grand feu enamel dial, limited to 200 pieces

Movement:

Manufacture manual winding movement calibre JLC 381, 21600 A/h

2 barrels