Cal. 3022/11 and 3022/12 has a power reserve of 45-50 hours. The central rotor automatic winding system is uni-directional. The variable inertia balance uses a flat balance spring attached to a mobile stud carrier.
Cal. 3022/11 and 3022/12 is very similar to Cal. VMF 3002/30 with a chronograph module rather than a calendar module. The “Big Date” Cal. 3022/11 is wider at 13¼ ligne (30.0 mm) and thicker at 7.4 mm. Cal. 3022/12 is thinner at 12½ ligne (28.0 mm) and thinner at 6.07 mm.