Introducing the Audemars Piguet Royal Oak Selfwinding "50th Anniversary" Steel Diamond Blue Dial 37mm, ref. 15551ST.ZZ.1356ST.02. This limited edition piece celebrates the legacy of the Royal Oak with a contemporary design and luxurious features. The 37mm stainless steel case is adorned with a diamond-set bezel featuring 40 brilliant-cut diamonds totaling approximately 0.92 carats. The "Bleu Nuit, Nuage 50" dial showcases the iconic "Grande Tapisserie" pattern, complemented by white gold applied hour markers and luminescent Royal Oak hands for optimal readability. Powered by the new self-winding Calibre 5900, this watch offers a power reserve of 60 hours and includes a signature oscillating weight that echoes the case color. With a water resistance of 50 meters, it is suitable for everyday wear. The stainless steel bracelet features an AP folding clasp, ensuring a secure fit. The Audemars Piguet Royal Oak "50th Anniversary" is a perfect blend of elegance and functionality.