Every time a watch incorporates complex functions such as a chronograph, timekeeping, etc., it will consume more power of the barrel, thereby affecting the accuracy of the watch’s travel time. problem. In response to this problem, Jaeger-LeCoultre successfully developed a ‘Dual-Wing’ bi-wing movement in ’07. In the same movement, two independent mechanical structures are used, one to provide power for the time, and the other to ensure complexity The power of the function is required, and the two are synchronized by the instant jump second hand.
Feature one: the embodiment of the biplane system
Duomètre à Chronographe is the first watch of the Duomètre series; Duomètre à Quantième Lunaire was released in ’10 years. Within the 381 movement are two barrels each with a power reserve of 50 hours. The date and moon phases provide power, while the other fully powers the escapement, ensuring precise travel time.
The jump seconds hand, which advances in 1/6 second jumps, continues, and most of the time jump seconds are generally chronograph models, so the jump seconds hand has also become one of the features on this moon phase date watch.
Feature two: returning the second hand to zero helps accurate timekeeping
In addition to the continuation of the ‘double-wing’ mechanical structure, Duomètre à Quantième Lunaire also retained the instant seconds hand that jumped forward in 1/6 seconds. The watch has two seconds hands, which are located at the center of the dial and at 6 o’clock. When the crown is pulled out to adjust the time, the escapement will not stop and the two seconds hands will return to the 12 o’clock position. The crown is pushed back to its original position, the two seconds hands start to rotate again, and they are immediately synchronized with the non-stop escapement, and rotate at the frequency of the watch, so that the time accuracy is guaranteed to the greatest extent in an instant. And because most of the chronograph seconds are generally equipped with instant jump seconds, the instant jump seconds have become one of the characteristics of this moon phase date watch.
The new moon phase plate is more concise, and the moon age and moon phase cycle scales are hidden. This modification makes the watch more elegant and more suitable for the large fire enamel face plate used in the new version.
Feature three: The dressing enamel looks elegant
The first Duomètre à Quantième Lunaire has a diameter of 42mm, and later introduced a smaller size of 40.5mm. It also put away the hollow design of the former in the power reserve position, making the watch as a whole more subtle and elegant; in 2014, On SIHH, Jaeger-LeCoultre brought a new Duomètre à Quantième Lunaire. The size also remained at 40.5mm, but the moon phase display was more concise. The moon age and moon phase cycle scales were hidden. The decorative face plate is replaced by a large fire enamel, which is flawless and clear, and matches the 18K white gold case. This change is obviously more elegant. Demonstrate the strength of Jaeger-LeCoultre in all aspects of craftsmanship.
Through the sapphire crystal bottom cover, you can see the ‘double wings’. The two independent barrels are polished by hand, the ratchet is polished by the sun-matte matte, and the engraved gold letters ‘REGULATEUR’ and ‘HEURES / MINUTES’ are engraved.
Duomètre à Quantième Lunaire
18K white gold material / 381 manual winding movement / eccentric hours, eccentric minutes, seconds, date display / second hand with stop seconds and zero reset function / lunar phase display / power reserve display / sapphire crystal mirror, transparent bottom cover / watch Diameter 40.5mm / Reference price: 430,000 RMB