Soprod Soprod M100 COSC

The Soprod M100 COSC is an automatic movement manufactured by Soprod. It measures 26.2mm in diameter and 3.6mm thick, operates at 28,800 vph with a 42-hour power reserve, and contains 25 jewels. The movement is COSC certified for chronometric accuracy of -4 to +6 seconds per day and features Côtes de Genève finishing. It serves as the standard caliber across Serica's current collection, including the 5303 and 6190 models.