The Junghans 684.72 watch movement features a ratchet on the dial side and a crown mechanism with a rocker bar. It derives its base caliber from the signature 144 model. The movement offers manual winding functionality and includes a sweep second hand. It is equipped with a date function that can be set by changing the time from 22:30 to 24:00. The Junghans 684.72 movement was utilized around the year 1965.