The Junghans 681.70 watch movement is an open face calibre featuring a cylinder escapement. It is equipped with a ratchet on the dial side and a crown mechanism with a rocker bar. The movement offers functions such as stem winding and setting, sub seconds, as well as optional features like a stoppable sweep second and a digital display for seconds, minutes, and jumping hour. This movement was commonly utilized during the approximate period of 1930.