The Dugena 1019 watch movement features a rotor placed out of center and an integrated winding gear, resulting in a remarkably thin movement for its time. It is equipped with a detached manual wind and introduced the first screw balance, later replaced by a ring balance. Notably, the split stem for Ocean Star models cannot be detached by pulling the crown, but rather detaches when the movement is turned at the right angle. The movement includes automatic and sweep second functions.