The Unitas 6380 is an open face calibre movement featuring a pin-lever escapement and a pendant mounted on the movement. It includes various functions such as a 60s (0.2s) chronograph, a 30-minute count, a 12-hour count, and a pillar wheel. Furthermore, it incorporates an addition timer with a pusher, a flyback mechanism, a stem winding system, and a center second hand. This movement was commonly used during the approximate time period of 1975.