Audemars Piguet Royal Oak Extra Thin Tourbillon Blue Dial 18kt Rose Gold Mens Watch 26510OR.OO.1220OR.01. 18kt rose gold case with a 18 kt rose gold bracelet. Fixed 18 kt rose gold bezel. Blue Petite Tapisserie dial with skeleton cut-out dial with rose gold-tone hands and stick hour markers. Minute markers around the outer rim. Hand Wind movement with 70 hour power reserve. Scratch resistant sapphire crystal. Screw down crown. Skeleton case back. Case diameter: 41 mm. Case thickness: 8.85 mm. Octagonal case shape. Deployment clasp with push button. Water resistant at 50 meters / 165 feet. Functions: Tourbillon, Hour, Minute, Power Reserve Indicator.