The Audemars Piguet Royal Oak 15451ST.ZZ.1256ST.02 is a luxury replica watch. It features an automatic movement with a caliber AP 3120 and a power reserve of 60 hours. It is certified within COSC limits for precision of -3/+3 seconds per day. The case is made of 904L stainless steel and has a sapphire crystal. The bezel is also made of 904L stainless steel and is gem set. The size of the case is 37.00 mm and it is 9.08 mm thick.