LONGINES 310BrandLONGINESCaliber310Size9FunctionVersionHandsStem4920Stem (subs.)Stem (2 pce)Balance staff14401Balance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8024920410Winding pignon723Balance staff ST -shock-absorber80214401