18 kt white gold case, blue alligator leather strap, fixed octagonal bezel. Blue waffle design dial with silver-tone baton hands and Arabic numeral hour markers featuring minute markers on the outer rim; luminous coating enables night readability. Analog dial type displaying hours, minutes, seconds. Sub-dials include day of the week indicator, date window at 3 o'clock, month aperture at 6 o'clock and central chronograph second hand. Complications: perpetual calendar with moon phase display. Chronograph functions: measuring elapsed time via two sub-dials (60-second and 30-minute). Caliber AP 2885 automatic movement providing self-winding power reserve. Scratch resistant sapphire crystal lens protecting the dial. Screw-down winding/crown secured by a safety screw cap. Skeleton case back revealing internal construction. Case diameter measures 44 mm. Deployment clasp with push-button mechanism for secure fastening. Rated water-resistant up to 20 meters / 65 feet depth suitability. Luxury Swiss-made mens watch functions include chronograph, day, date, month display, hour, minute, second and moon phase indicators.
![Pre-owned Audemars Piguet Royal Oak Tourbillon Chronograph Blue Dial Mens Watch [25977ST-OO-1205ST-01]](https://cdn.lepodium.net/images/000/088/88074-2.jpg)
