The Roamer 414 watch movement, which was in use from 1936 onwards, features a Breguet-type hairspring and is widely applicable due to the availability of three different hand post heights. This allows for its use in various flat and curved models. The movement utilizes Gruen's proprietary Conoruma alloy for the hairspring and balance, resulting in low temperature dependence. In terms of functions, the movement is manually wound and includes a sub-second feature.