HATTORY-SEIKO 8221BrandHATTORY-SEIKOCaliber8221SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4018221Winding stem03548259840354825.8221MAIN PLATE(PLASTIC)01018219840101821.8221CENTER WHEEL BRIDGE01228209840122820.8221CENTER WHEEL AND PINION02218229840221822.8221FOURTH WHEEL AND PINION02418229840241822.8221Hour wheel02718229840271822.8221Setting lever03838219840383821