This is an Audemars Piguet Royal Oak Ref. 15400ST, circa 2016. A modern classic from the legendary Royal Oak line, this model features a robust 41mm stainless steel case, the signature Grande Tapisserie dial, and an integrated brushed steel bracelet. Powered by the AP Caliber 3120 automatic movement, it delivers refined performance within one of the most iconic luxury sports watch designs of all time. Key Features: Model: Audemars Piguet Royal Oak Reference: 15400ST.OO.1220ST.XX Case Size: 41 mm Case Material: Stainless Steel Bezel: Fixed octagonal bezel with exposed screws Dial: Black Grande Tapisserie pattern dial Movement: Audemars Piguet Caliber 3120 automatic Bracelet: Integrated stainless steel Royal Oak bracelet Crystal: Sapphire crystal Functions: Hours, Minutes, Seconds, Date Box: Yes Papers: Yes Condition: 9/10 – excellent overall condition Year: 2016 Watch can be polished on customer request.