The Cyma Tavannes 033 is a mechanical watch movement that features an open face calibre with a set-lever spring positioned between the plates. It offers various options including a bimetallic screw balance, Breguet hairspring, and Reed's regulator. The differences between the 293 and 1721 models are not currently known. The movement functions include stem winding and setting, as well as a sub seconds display. The Cyma Tavannes 033 was produced around the year 1925.