HATTORY-SEIKO 3421A Exploded diagram BrandHATTORY-SEIKOCaliber3421ASizeFunctionSCVersionHandsStem354-546Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO3421ASC WatchpartsPart NocaliberdescriptionoriginalArtno.4013421Winding stem035454698403545464000BElectronic module4001-545984040015454060BCoil -red4002-54598404002545.3421MAIN PLATE(PLASTIC)01015469840101546.3421TRAIN WHEEL BRIDGE01255469840125546.3421CENTER WHEEL AND PINION02215469840221546.3421FOURTH WHEEL AND PINION02415469840241546.3421Hour wheel02715469840271546.3421Setting lever03835459840383545