Audemars Piguet Royal Oak Perpetual Calendar Watch - 26574ST.OO.1220ST.02 Yellow octagonal crown in 18k rose

octagonal crown in 18k rose gold set with a faceted sapphire

caliber 9981 MC manual movement

black military strap

non screw-locked crown with two gaskets

Audemars Piguet Royal Oak Perpetual Calendar Watch - 26574ST.OO.1220ST.02 Yellow octagonal crown in 18k rose41 mm stainless steel case, 9. 5 mm thick, glareproofed sapphire crystal back, screw locked crown, glareproofed sapphire crystal, blue dial with Grande Tapisserie pattern, white gold applied hourmarkers and Royal Oak hands with luminescent coating, blue inner bezel, Manufacture 5134 selfwinding movement with perpetual calendar with week indication, day, date, astronomical moon, month, leap year, hours and minutes, approximately 40 hours of power