IWC 4111BrandIWCCaliber4111SizeFunctionVersionHandsStem5441Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem8025441445= C412Setting lever spring94200445C412