REGO 1380 Brand REGO Caliber 1380 Size Function Version Hands Stem 10019 Stem (subs.) Stem (2 pce) Balance staff 40010 Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem80210019723Balance staff ST -shock-absorber80240010