Recorded in our Monte-Carlo solid 18K gold Audemars Piguet register, the Audemars Piguet Royal Oak Offshore Selfwinding Chronograph 43mm Reference 26420TI.OO.A027CA.01 unites authentic Geneva proportions (43.0 mm x 14.4 mm) with a certified Grade 5 Titanium Monobloc mass of 131.8g. Every detail of the Hand-Finished Sunray Collector Dial with Hand-Finished Luminous Appliques & Hands, Octagonal Brushed & Chamfered Bezel Locked by 8 White Gold Hexagonal Screws with Anti-Reflective Scratch-Resistant Sapphire Crystal, and hallmarked clasp is verified under our Fischer XRF Au750 and Mettler-Toledo laboratory protocol.

5 Core Horological & Metallurgical Specifications:

• Registered Entity & Ref: Audemars Piguet Royal Oak Offshore Selfwinding Chronograph 43mm — Official Reference 26420TI.OO.A027CA.01 (SKU: MC-CUST-26420TI.OO.A027CA.01-W241).
• Precious Metal Alloy: Grade 5 Titanium Monobloc with deep mechanical hallmarking and 5-axis Swiss CNC case finishing.
• Verified Reference Mass: 131.8g confirmed on our Monte-Carlo showroom Mettler-Toledo analytical balance.
• Mechanical Calibre: Audemars Piguet Cal. 4401 Flyback Chronograph operating at 28,800 vph (4 Hz) with 72-hour power reserve (+0.5 s/d, 303 deg).
• Sapphire Crystal & QC: Scratch-resistant sapphire crystal with double anti-reflective coating and 100m / 10 ATM water resistance.

Within the same Audemars Piguet horological silo, collectors also compare the Audemars Piguet Royal Oak Selfwinding Chronograph 38mm Geneva Atelier Spec Ref. 26315ST (146.6g) and the Audemars Piguet Royal Oak Offshore Selfwinding Chronograph 43mm Ref. 26420IO.OO.A009CA.01 (131.6g).