The L.U.C. Lunar One is a perpetual calendar with orbital moon phases. It is equipped with the mechanical self-winding L.U.C. 96 QP movement, a chronometer certified by the COSC, and carries the Geneva Seal hallmark. The Lunar One has a power reserve of approximately 70 hours, and the perpetual calendar dial displays the date (through a double-large date window at 12 o’clock), the day of the week, the leap year, and a 24-hour indication. Inside Information: L.U.C. stands for the company’s founder, Louis-Ulysse Chopard.