HATTORY-SEIKO 6G28A Exploded diagram BrandHATTORY-SEIKOCaliber6G28ASizeFunctionVersionHandsStem351-177Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery377WatchpartsPart NocaliberdescriptionoriginalArtno.401Winding stem351-1779840351177