LONGINES 508BrandLONGINESCaliber508SizeFunctionVersionHandsStem7559Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027559443= 503Setting lever95400443503443= 505Setting lever95400443505445= 501Setting lever jumper combinded95400445501445= 505Setting lever spring95400445505