LONGINES 645.1BrandLONGINESCaliber645.1SizeFunctionVersionHandsStem5065Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.203third wheel401Winding stem8025065407Clutch wheel410Winding pignon420BCrown wheel954004206451450Setting wheel