Audemars Piguet Royal Oak Perpetual Calendar – Blue Dial Masterpiece

The Royal Oak Perpetual Calendar – Blue Dial Masterpiece is a triumph of horological engineering and timeless design. Encased in the iconic Royal Oak silhouette, this watch features a deep blue dial with four sub-dials that elegantly display the day, date, month, and moon phase—offering perpetual precision that adjusts for leap years and calendar shifts automatically.

🔍 Key Features

1. Model: Audemars Piguet Royal Oak Perpetual Calendar (specify reference)
2. Dial: Blue with perpetual calendar layout and moon phase indicator
3. Case & Bracelet: Stainless steel / ceramic (specify material)
4. Movement: Self-winding perpetual calendar calibre 
5. Crystal: Sapphire front and back
6. Case Size: 41mm
7. Water Resistance: 20m
8. Power Reserve: ~40 hours
9. Packaging: Includes original box, green booklet, and certification papers