UNITAS 158BrandUNITASCaliber158Size10 1/2FunctionVersionHands0,65x1,30Stem7019Stem (subs.)Stem (2 pce)Balance staff35801Balance staff (subs.)35505 INCAMainspring (subs.)1,5x9,0x0,10Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027019723Balance staff, pivoted80235505723Balance staff ST -shock-absorber80235801