ISA 8154.221BrandISACaliber8154.221Size11 1/2FunctionSC-DD-CHR-ALVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.405BWinding stem -mouv.part51.020.029430040181544000= 8154Electronic module943040008154