HATTORY-SEIKO 8221 Brand HATTORY-SEIKO Caliber 8221 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4018221Winding stem03548259840354825.8221MAIN PLATE(PLASTIC)01018219840101821.8221CENTER WHEEL BRIDGE01228209840122820.8221CENTER WHEEL AND PINION02218229840221822.8221FOURTH WHEEL AND PINION02418229840241822.8221Hour wheel02718229840271822.8221Setting lever03838219840383821