Audemars Piguet Royal Oak Mens Watch 26603ST.OO.D002CR.01. Stainless steel case with a brown leather strap strap. Fixed bezel. Silver dial with luminous hands and index hour markers. Minute markers around the outer rim. Audemars Piguet Calibre 2120/2808 automatic movement with about 40 hours of power reserve. Scratch resistant sapphire crystal. Screw down crown. Skeleton transparent case back. Case size: 40 mm. Octagon case shape. Deployment clasp. Water resistant at 20 meters / 65 feet. Functions: perpetual calendar, moon phase, leap year, month, date, day, hour, minute, equation of time, sunset and sunrise times. Dress watch style. Watch label: Swiss Made. Item Variations: 26603ST OO D002CR 01, 26603ST-OO-D002CR-01, 26603STOOD002CR01.