HATTORY-SEIKO 1428A Exploded diagram Brand HATTORY-SEIKO Caliber 1428A Size Function Version Hands Stem 351-144 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO1428A WatchpartsPart NocaliberdescriptionoriginalArtno.4000Electronic module4001-249025998