Patek Philippe Complications Annual Calendar, Moon Phases 5205G-013 self-winding mechanical watch features a 40mm 18k white gold case surrounding a blue dial on a black alligator leather strap with an 18k white gold tang buckle. Functions include hours, minutes, seconds, day, date, month, 24-hour indicator and moonphase. This watch is powered by the Manufacture Movement Caliber 324 S QA LU 24H/206. This watch is water-resistant to 30m.