Audemars Piguet caliber AP 4308

Developed and manufactured in-house by Audemars Piguet, Calibre 4308 is a selfwinding automatic movement used in the Royal Oak Offshore Diver collection. The movement operates at a frequency of 28,800 vibrations per hour (4 Hz) and comprises 234 components with 32 jewels. It measures 32 mm in diameter and has a thickness of 5.2 mm. The power reserve is approximately 60 hours. Calibre 4308 provides indications of hours, minutes, central seconds, and date. It is engineered for robustness and daily wear, and is visible through a sapphire caseback in compatible references.