Audemars Piguet Royal Oak Selfwinding Chronograph – Ref. 26240ST.OO.1320ST.07
The Audemars Piguet Royal Oak Selfwinding Chronograph (Ref. 26240ST.OO.1320ST.07), introduced in 2022, marks the new flagship of the Royal Oak chronograph line. With a full 41 mm stainless steel case and a sleek silver “Grande Tapisserie” dial, this model blends heritage design with modern ergonomics—offering collectors refined aesthetics and technical prowess in a single wristwatch.
Case Bracelet
- Material Finish: Brushed and polished 316L stainless steel case, octagonal bezel with hexagonal screws, matched with an integrated steel bracelet and AP folding clasp.
- Dimensions: 41 mm diameter × 12.4 mm thickness, striking a perfect balance between wrist presence and refined wearability.
- Crystal Water Resistance: Sapphire crystal on front and back, glare‑proofed, with 50 m water resistance courtesy of a screw‑locked crown.
Dial Hands
Featuring a silver-toned “Grande Tapisserie” dial with matching chronograph registers, this reference exudes elegance and depth. Applied white-gold hour markers and Royal Oak hands are filled with luminescent material to ensure clarity under all lighting conditions. A discreet date aperture at 4:30 completes the balanced layout.
Movement Chronograph Functionality
- Calibre 4401: Audemars Piguet’s integrated automatic chronograph movement with vertical-clutch and column-wheel mechanism. It beats at 4 Hz (28,800 vph) and stores a 70‑hour power reserve.
- Complications: Central chronograph seconds, 30-minute and 12-hour counters, small seconds, fly-back function, and date—designed for both precision and practicality.
Unique Features
Ref. 26240ST replaces the limited-edition 50th‑Anniversary model with refined proportions—beveled case edges, wider bracelet, and enhanced comfort. The signature silver “Grande Tapisserie” dial lends a modern and versatile aesthetic, while the Calibre 4401’s vertical-clutch and fly-back enable seamless chronograph operation. As a permanent addition, it offers exclusivity with daily wear appeal.
Technical Specifications
- Reference: 26240ST.OO.1320ST.07
- Case Bracelet: Stainless steel; 41 mm × 12.4 mm; 50 m WR
- Dial: Silver “Grande Tapisserie” with matching subdials
- Hands Markers: White gold with luminescent coating
- Movement: Calibre 4401 automatic; 4 Hz; ~70 h PR
- Complications: Fly-back chronograph, date, small seconds
- Crystal: Sapphire front/back, anti‑glare
Conclusion 26240ST.OO.1320ST.07
The Audemars Piguet Royal Oak Selfwinding Chronograph Ref. 26240ST.OO.1320ST.07 is a milestone in the Royal Oak chronograph lineage. Its sleek silver dial, ergonomic case refinements, and advanced Calibre 4401 combine to set new benchmarks for elegance, functionality, and collector appeal. As both a timeless classic and a watchmaking innovation, it is a must-have for discerning enthusiasts seeking understated luxury with mechanical excellence.
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