Audemars Piguet Royal Oak Nickel Grey Dial 18 Carat Rose Gold Automatic Ladies Watch 15450OR.OO.1256OR.01. 18kt rose gold case with a 18kt rose gold bracelet. Fixed bezel. Nickel grey dial with rose gold-tone hands and index hour markers. Automatic movement. Calibre 3120 engine. Scratch resistant sapphire crystal. Screw down crown. Skeleton transparent exhibition see through case back. Case diameter: 37 mm. Case thickness: 9.80 mm. Round case shape. Deployment with push button clasp. Water resistant at 50 meters / 165 feet. Functions: date, day, hour, minute, second.