Audemars Piguet Royal Oak Selfwinding 37 mm – Ref. 15550ST.OO.1356ST.06
The Audemars Piguet Royal Oak Selfwinding 37 mm (Ref. 15550ST.OO.1356ST.06) represents a new chapter in Royal Oak design, introduced in 2022 as part of the brand’s 50th‑anniversary revival. Housed in a 37 mm stainless‑steel case and framed by the instantly recognizable octagonal bezel with hexagonal screws, it retains the elegance of the classic while embracing Audemars Piguet’s latest ergonomic improvements. Powered by the in‑house Calibre 5900 automatic movement and adorned with a rich “Bleu Nuit, Nuage 50” Grande Tapisserie dial, this model strikes a refined balance between heritage and contemporary sophistication.
Case Bracelet
- Material Dimensions: Crafted from stainless steel, the 37 mm case maintains a sleek 9.1 mm thickness and 50 m water resistance, optimized for all-day wearability. Featuring dual anti‑glare sapphire crystals—front and caseback—this version skillfully blends durability with luxury aesthetic.
- Integrated Bracelet: The matching steel bracelet is fitted with AP’s classic folding clasp, alternating brushed and polished links for visual depth and ergonomic comfort.
Dial Hands
The dial in “Bleu Nuit, Nuage 50” employs the iconic “Grande Tapisserie” pattern, echoing the Royal Oak’s original 1972 design. The deep navy face gains a modern twist through clean applied white‑gold hour markers and luminescent Royal Oak hands—resulting in a timeless design optimized for visibility.
Movement: Calibre 5900
- In‑House Automatic: Powered by the new ultra-efficient Calibre 5900, this selfwinding movement delivers precise hours, minutes, seconds, and a date display while maintaining a robust 60‑hour power reserve—an ideal blend of performance and refinement.
- Technical Genus: The Calibre 5900 beats at 4 Hz (28,800 vph), contains 29 jewels, and is framed by a sapphire exhibition back, inviting admiration of its fine finishing.
Unique Characteristics
Ref. 15550ST.OO.1356ST.06 stands apart from its predecessors with its approachable 37 mm mid‑size profile—an ideal cross‑section for both men and women. The integration of Calibre 5900 offers heritage fans modern mechanical power, while the “Bleu Nuit, Nuage 50” dial recalls the model’s origins and introduces a subtle contemporary flair. Its perfectly balanced size and timeless design make it a versatile essential within the Royal Oak portfolio.
Technical Summary
- Reference: 15550ST.OO.1356ST.06
- Case: 37 mm stainless steel; 9.1 mm thickness; 50 m WR
- Dial: Bleu Nuit Nuage 50 Grande Tapisserie; white‑gold applied markers; luminescent hands
- Movement: Calibre 5900 automatic; 4 Hz; ~60‑h power reserve
- Bracelet: Integrated steel with folding clasp
Conclusion 15550ST.OO.1356ST.06
The Audemars Piguet Royal Oak Selfwinding 37 mm Ref. 15550ST.OO.1356ST.06 is an expertly refined blend of sporty elegance, mechanical integrity, and refined design. With its ideal unisex size, iconic Grande Tapisserie dial, dependable Calibre 5900, and modern ergonomics, it’s a versatile staple for collectors seeking everyday luxury rooted in the Royal Oak legacy.
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