HATTORY-SEIKO 9920BrandHATTORY-SEIKOCaliber9920SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4019920Winding stem03547819840354781.9920MAIN PLATE(PLASTIC)01017339840101733.9920CENTER WHEEL BRIDGE01227319840122731.9920CENTER WHEEL AND PINION02217819840221781.9920Cannon pinion02257819840225781.9920FOURTH WHEEL AND PINION02417819840241781.9920Hour wheel02717819840271781.9920Setting lever03837809840383780