UNITAS 6437BrandUNITASCaliber6437Size18 1/2FunctionVersionHands1,15x2,00Stem12003Stem (subs.)Stem (2 pce)Balance staff40705Balance staff (subs.)= 40704Mainspring (subs.)2,00x16,50x0,20Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem80212003723Balance staff ST -shock-absorber80240705