The Audemars Piguet Royal Oak Selfwinding reference 77451ST.ZZ.1361ST.02 is a 34mm luxury sports watch crafted in stainless steel, released in 2022 to commemorate the 50th anniversary of the Royal Oak collection. This timepiece features the signature octagonal case design with a thickness of 8.8mm and is distinguished by a fixed bezel set with 40 brilliant-cut diamonds. The watch is characterized by its “Bleu Nuit, Nuage 50” dial, which utilizes the iconic Grande Tapisserie pattern and includes white gold applied hour-markers and Royal Oak hands with luminescent coating for enhanced legibility.
Powering the timepiece is the in-house Calibre 5800 automatic movement, which consists of 189 parts and 28 jewels. This movement operates at a frequency of 4Hz and provides a power reserve of approximately 50 hours. The complications are practical for daily wear, featuring central hours, minutes, and seconds, along with a date window positioned at the 3 o’clock mark. The watch’s mechanical architecture and anniversary-specific “50th Anniversary” oscillating weight can be viewed through the sapphire crystal caseback.
General reviews of the 77451ST highlight its refined proportions and the successful integration of a mechanical movement into a smaller 34mm case diameter, making it a popular choice for those with smaller wrists. The addition of the diamond-set bezel is often noted for providing a balanced touch of luxury without compromising the collection’s sporty aesthetic. The watch is further praised for its high-quality construction, including the integrated stainless steel bracelet with an AP folding clasp and a water resistance of 50 meters, though some enthusiasts note its positioning primarily as a ladies’ or mid-size luxury model.