HATTORY-SEIKO V721BrandHATTORY-SEIKOCaliberV721SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401V721Winding stem03518809840351880401V721Winding stem03518909840351890