The Audemars Piguet Royal Oak reference 15400ST.OO.1220ST.01 is a 41mm luxury sports watch featuring a stainless steel case with a thickness of 9.8mm. This model is characterized by its iconic octagonal bezel secured by eight hexagonal screws and an integrated stainless steel bracelet with a folding AP clasp. The black dial is decorated with the signature Grande Tapisserie pattern and features white gold applied hour-markers and Royal Oak hands, both treated with a luminescent coating to ensure legibility in low-light conditions.
In terms of movement and complications, the timepiece is powered by the in-house self-winding Calibre 3120, which is composed of 280 parts and includes 40 jewels. The movement provides a 60-hour power reserve and operates at a frequency of 3Hz (21,600 vibrations per hour). It features a date display located at the 3 o’clock position and a central sweeping seconds hand. The watch is equipped with a screw-down crown and a transparent sapphire case back, allowing a view of the 22-carat gold rotor and the movement’s hand-finished decorations, and it offers water resistance up to 50 meters.
General reviews of the 15400ST often highlight its status as a versatile horological icon that transitions well between formal and casual settings. The integrated bracelet is frequently praised for its exceptional hand-finished quality and comfort, often being cited as one of the best in the industry. While the 41mm case is noted for providing a more contemporary presence than the original 39mm “Jumbo,” some reviewers mention that it wears larger than its diameter suggests. Common criticisms include the lack of micro-adjustments on the bracelet and the watch’s tendency to show scratches on its extensive satin-finished surfaces.