At the heart of this Royal Oak is a grey dial rendered in the signature Grande Tapisserie pattern, complemented by white gold applied hour-markers and Royal Oak hands finished with a luminescent coating. The 37mm stainless steel case offers water resistance to 50 metres and is paired with a stainless steel bracelet fastened by an AP folding clasp.
Power comes from a selfwinding calibre measuring 26.2mm in diameter and just 3.9mm thick, comprising 188 parts and 29 jewels. Operating at 4 Hz (28,800 vph), it delivers a 60-hour power reserve while indicating hours, minutes, centre seconds, and date.
Reference 15551ST.ZZ.1356ST.06 represents the Royal Oak in a versatile 37mm format, combining the model's enduring geometric architecture with the added brilliance of a diamond-set bezel — a configuration that bridges the line between sport and elegance.
