HATTORY-SEIKO 78A Exploded diagram BrandHATTORY-SEIKOCaliber78ASizeFunctionVersionHandsStem354-780Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.443Setting lever assembled383-7809840383780