Jaeger-lecoultre moon phase power reserve

In most Jaeger-LeCoultre moon phase models, you can expect a power reserve that usually ranges between 40 and 50 hours. This time span allows wearers substantial flexibility in daily usage without the anxiety of constant winding. An automatic moon phase watch is a complication watch that accurately follows the different phases of the moon — new moon, first quarter, full moon, last quarter — allowing you to observe the continuous evolution of the celestial body with remarkable precision. The mechanical movement, often featuring complications, ensures precision in various horological functions, including the moon phase indicator. Marrying the high precision of a chronograph with the charm of a celestial complication, the Duometre Chronograph Moon watch is powered by the new Calibre 391. Introduced in 2007, the patented Duometre mechanism features two barrels and two separate gear trains linked to a single regulating organ.