IWC 2405BrandIWCCaliber2405SizeFunctionVersionHandsStemeigenStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401BWinding stem942004012405443= ETA 2892-2Setting lever assembled9200044328904000940.111Electronic module920040009401