IWC 964BrandIWCCaliber964SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.771BMainspring AUT sliding attachemnet942007719641488BPawel winding wheel94201488964