HATTORY-SEIKO 7810A Exploded diagram BrandHATTORY-SEIKOCaliber7810ASizeFunctionVersionHandsStem354-780Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO7810A WatchpartsPart NocaliberdescriptionoriginalArtno.401BHandsetting stem354-7809840354780443= 9923Setting lever assembled383-78098403837804000Electronic module4001-781984040017814060Coil -red4002-781025998