Audemars Piguet Royal Oak Tourbillon Chronograph Openworked Watch - 26347PT.OO.D315CR.0144 mm 950 platinum case, 13. 2 mm thick, glareproofed sapphire crystal back, glareproofed sapphire crystal, satin brushed blue openworked dial with blue counters, pink gold applied hour markers and Royal Oak hands with luminescent coating, blue inner bezel, Calibre 2936 hand wound movement with tourbillon, chronograph, hours, minutes, small seconds, approximately 72 hours of power reserve, hand stitched large square scale blue alligator strap, 950