REGO 1350 Brand REGO Caliber 1350 Size Function Version Hands Stem 10019 Stem (subs.) Stem (2 pce) Balance staff 39901 Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem80210019723Balance staff ST -shock-absorber80239901