The Dugena 4003 watch movement is a hunter calibre with different bridge shapes. It features a negative stem mechanism, as well as the option of a lever cock and banking pins or a lever bridge with fixed banking. The movement includes a Breguet hairspring, a bimetallic screw balance, and a cam disc regulator. Its functions include stem winding and setting, a sub-second dial, and it was commonly used around the year 1939.