Audemars Piguet Royal Oak Selfwinding Chronograph – Ref. 26240OR.OO.1320OR.05
The Audemars Piguet Royal Oak Selfwinding Chronograph (Ref. 26240OR.OO.1320OR.05) is a distinguished expression of high-luxury horology. Introduced in late 2022, this 41 mm chronograph marries the enduring elegance of rose gold with a captivating “Bleu Nuit Nuage 50” Grande Tapisserie dial. Its fully integrated 18‑carat pink gold case, bezel, and bracelet reflect the Royal Oak’s iconic aesthetic, now elevated with advanced mechanical sophistication and refined design updates.
Case & Bracelet
- Material: Solid 18 ct pink gold (750), including bezel, screw‑locked crown, chronograph push-pieces, and integrated bracelet with folding AP clasp.
- Dimensions: 41 mm diameter × 12.4 mm thickness; water resistant to 50 m.
- Crystal: Glare‑proofed sapphire on both front and display back, offering a window into the movement.
Dial & Hands
The watch features a deep-blue “Bleu Nuit Nuage 50” Grande Tapisserie dial—a subtle homage to the original Royal Oak—enhanced by matching chronograph registers. Rose gold applied hour markers and Royal Oak hands are coated with luminescence for optimal readability. The dial’s elegant depth and contrast evoke refinement, while a discreet date window between 4 and 5 o’clock maintains balance.
Movement & Chronograph
- Calibre 4401: Fully integrated automatic chronograph with vertical clutch and fly-back function, running at 4 Hz (28,800 vph). Features a 70-hour power reserve.
- Functions: Central chronograph seconds, 30-minute and 12-hour counters, small seconds, date, and fly-back capability.
Unique Attributes
This reference stands out through its combination of full rose‑gold construction and the latest Royal Oak evolution—refined case bevels, broader bracelet links, and enhanced ergonomics—delivering both spectacular presence and everyday comfort. The fly-back chronograph, supported by the Calibre 4401’s vertical clutch, provides mechanical smoothness rarely found in traditional chronographs.
Technical Specifications
- Reference: 26240OR.OO.1320OR.05
- Case & Bracelet: 18 ct pink gold, 41 mm × 12.4 mm, 50 m WR
- Dial: Bleu Nuit Nuage 50 Grande Tapisserie with matching subdials
- Hands & Markers: Rose gold with luminescent coating
- Movement: Calibre 4401, automatic, 4 Hz, ~70 h power reserve
- Functions: Fly-back chronograph, date, small seconds
- Crystal: Sapphire front/back, glare-proofed
Collector Appeal
The Ref. 26240OR represents a modern flagship in AP’s Royal Oak chronograph line. Its fully gold execution paired with the iconic bleu dial and advanced movement makes it a prized collector’s item. The Calibre 4401’s technical prowess and visible finishing through the display back reward both visual appreciation and mechanical admiration. Meanwhile, the rose-gold tones add warmth and luxury suited for both formal and refined everyday wear.
Conclusion 26240OR.OO.1320OR.05
The Audemars Piguet Royal Oak Selfwinding Chronograph 26240OR.OO.1320OR.05 is a masterclass in luxury chronograph design. By blending signature Royal Oak aesthetics with technological innovation and premium materials, it delivers a compelling statement of style, performance, and enduring value—a standout piece in any horological collection.

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