The Audemars Piguet Royal Oak Selfwinding Steel Ice Blue Dial 37mm ref. 15550ST.OO.1356ST.04 embodies the refined updates of the Royal Oak design evolution. Crafted in stainless steel, the 37mm case features a slim 9.1mm profile, with a glareproof sapphire crystal and exhibition caseback for enhanced durability and visibility. At its heart is the selfwinding Calibre 5900, offering a 60-hour power reserve and precise timekeeping. The light blue “Grande Tapisserie” dial is a standout feature, complemented by white gold applied hour markers and luminescent Royal Oak hands for optimal legibility. The integrated stainless steel bracelet with an AP folding clasp ensures a seamless and comfortable fit. Further distinguished by the "50-years" rhodium-toned pink gold oscillating weight, this 2022 release is water-resistant to 50 meters, combining robust functionality with a modern aesthetic in a versatile 37mm size.