HATTORY-SEIKO 8523A Exploded diagram Brand HATTORY-SEIKO Caliber 8523A Size Function Version Hands Stem 354-455 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 397 MovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO8523A Watchparts Part NocaliberdescriptionoriginalArtno.401= 8522Handsetting stem354-45598403544554000Electronic module4001-371984040013714060Coil4002-450025998