BRAND : Audemars Piguet MODEL : Royal Oak Selfwinding Flying Tourbillon Openworked MODEL NUMBER : 26735ST.OO.1320ST.02 CASE MATERIAL: Stainless steel WATER RESISTANCE: 50 m SIZE: 41mm DIAL: Rhodium-toned openworked dial, white gold applied hour-markers and Royal Oak hands with luminescent coating, slate grey inner bezel BRACELET : Stainless steel bracelet with AP folding clasp FUNCTIONS: Flying tourbillon, hours and minutes NUMBER OF JEWELS: 27 MECHANISM: Selfwinding CALIBRE 2972 POWER RESERVE: 65 h TOTAL DIAMETER: 31.5 mm NUMBER OF PARTS: 271 FREQUENCY: 3 hz 21,600 vph THICKNESS : 6.2 mm