Patek Philippe Men Grand Complications Perpetual Calender Moonphase Watch - 5327R-00139 mm 18K rose gold case, interchangeable full back and sapphire crystal case back, ivory lacquered dial with gold applied Breguet numerals, caliber 240 Q self winding movement with perpetual calendar, day, date, month, leap year and 24 hour indication by hands, moon phases, approximately 38 48 hours of power reserve, shiny brown alligator strap with square scales, fold over buckle. Water resistant to 30 m.