The Felsa 415 watch movement, used during the period 1966-1970, features an indirectly driven minute and automatic gear integrated into the movement, allowing a low profile design. It incorporates a ratchet on the dial side and a crown mechanism with a rocker bar. The movement also includes a rather small rotor ball bearing. Functionally, it includes an automatic winding system, a sweep second hand, and Incabloc shock protection.