HATTORY-SEIKO 78A Exploded diagram Brand HATTORY-SEIKO Caliber 78A Size Function Version Hands Stem 354-780 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery WatchpartsPart NocaliberdescriptionoriginalArtno.443Setting lever assembled383-7809840383780