OMEGA 3301 Exploded diagram Brand OMEGA Caliber 3301 Size Function Version Hands Stem 3303 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4013303Aufzugwelle3303.51010965033030401