Audemars Piguet 7121

The caliber 7121 is an in-house automatic movement developed by Audemars Piguet, used to power the model 16202. It measures 29.6 mm in diameter and 3.2 mm in height, contains 40 jewels, and operates at a frequency of 28,800 vibrations per hour with a power reserve of 55 hours. It features a central rotor with automatic bidirectional winding, and includes sweep seconds, a quickset date function, and a date complication.