Here are the key specifications for the Audemars Piguet Royal Oak Selfwinding Chronograph 18-carat Pink Gold
| Specification | Details |
|---|---|
| Brand | Audemars Piguet |
| Collection | Royal Oak Selfwinding Chronograph “50th Anniversary” |
| Reference | 26240OR.OO.D315CR.02 |
| Case Material | 18-carat pink gold |
| Case Diameter | 41 mm |
| Case Thickness | ~12.4 mm (typical for 26240 chronographs) |
| Dial Color & Pattern | “Bleu Nuit, Nuage 50” Grande Tapisserie with matching chronograph counters |
| Crystal | Glare-proofed sapphire crystal |
| Caseback | Sapphire exhibition caseback |
| Movement Type | Self-winding automatic |
| Caliber | Audemars Piguet Caliber 4401 (integrated chronograph, column wheel & vertical clutch) |
| Functions | Hours, Minutes, Small Seconds, Date, Flyback Chronograph (central seconds, 30-min & 12-hr counters) |
| Power Reserve | ~70 hours |
| Jewels | 40 |
| Frequency | 28,800 vph / 4 Hz |
| Strap | Blue alligator leather strap with 18-carat pink gold AP folding clasp |
| Water Resistance | 50 m / 5 ATM |
| Style / Gender | Luxury Sports Chronograph / Men’s & Unisex |
| Origin | Swiss Made |




