HATTORY-SEIKO 8523A Exploded diagram BrandHATTORY-SEIKOCaliber8523ASizeFunctionVersionHandsStem354-455Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery397MovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO8523A WatchpartsPart NocaliberdescriptionoriginalArtno.401= 8522Handsetting stem354-45598403544554000Electronic module4001-371984040013714060Coil4002-450025998