AP 2225

This movement has a total thickness of 3.25 mm and a diameter of 26.60 mm, operating at a 4 Hz frequency (28,800 vph). It contains 36 jewels, provides a 40-hour power reserve, and features bidirectional automatic winding, an annular balance, a flat balance-spring, a mobile stud-holder, and a stop-seconds function. The rotor utilizes ceramic ball bearings and includes a 21-carat gold oscillating weight segment.