Sellita SW383-1

The Sellita SW383-1 is an automatic movement with pointer date, day, month, and moon phase complications. It beats at 28,800 vibrations per hour, delivers a 56-hour power reserve, and is fitted with 25 jewels. The movement includes quickset functions for day and date, a stop second device, and a ball bearing rotor for automatic winding. This caliber is used by various watch brands in their calendar collection models.