Jaeger-LeCoultre Duomètre à Quantième Lunaire Luxury Watch Review

http://www.thewatchbox.com Jaeger-LeCoultre's Duometre family rocked the world of high horology in 2007. The dual-movement, single-case concept upset centuries of assumptions about how a mechanical watch was supposed to keep time. In 2010, JLC rocked the world again with its second take on the Duometre architecture. With two mainspring barrels, two drive trains, two dials, and a single lightning-second heart, the Duomètre à Quantième Lunaire is two watches in one... make that two *extraordinary* watches. And as one of only 300 in 18-K yellow gold, it's exclusive even by the rarefied standard of the Duometre line. Whereas the 2007 Duometre a Chronographe was designed to optimize the performance of a chronograph in tandem with hours, minutes, and seconds, the Duometre QL strives to achieve utmost chronometric efficiency. One mainspring barrel drives the hours, minutes, and seconds; the second barrel drives the moon phase and date. The result can be significant time loss. While a date and moon indication may seem undemanding compared to the constant beat of a chronograph, the reality is that the protracted engagement and sudden "leap" of these complications requires a huge amount of torque. In a conventional watch, the nightly action of moon and date functions dramatically lowers the balance wheel amplitude and devastates the timing precision. But Jaeger-LeCoultre sidesteps that hazard with a combination of raw power and finesse. The power aspect is provided by a second 5