The Desa 330 watch movement, also known as the Wehrmachtswerk or Germany Military Movement, is often or always signed as AS 1560. While the specific differences between the 1595, 1631, 1642, and 1694 variations are not known, the movement functions include manual winding, sub-second display, and a date feature set by changing the 21-24 hour indicator. The Desa 330 movement was utilized around the period of 1965.