IWC 2405 Brand IWC Caliber 2405 Size Function Version Hands Stem eigen Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.401BWinding stem942004012405443= ETA 2892-2Setting lever assembled9200044328904000940.111Electronic module920040009401