ETA SA M100-DATE

The M100-DATE is an automatic movement manufactured by ETA SA, originally developed as part of the Soprod A10 family to compete with the ETA 2892A2. Operating at 28,800 vph, it measures 25.0mm in diameter and features hacking seconds, hand winding, and quickset date correction. The movement includes a central rotor with bi-directional automatic winding. It is currently in production and also known as the Perrelet Cal. P-321, having been renamed from the Soprod Cal. A10-2 in 2016.