RONDA 9017-21BrandRONDACaliber9017-21SizeFunctionVersionHandsStem7248Stem (subs.)7249Stem (2 pce)Balance staff31710Balance staff (subs.)31711Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8027248401Aufzugwelle Ersatz8027249723Balance staff, pivoted80231711723Balance staff ST -shock-absorber80231710