HATTORY-SEIKO 8522A Exploded diagram Brand HATTORY-SEIKO Caliber 8522A Size Function Version Hands Stem 354-455 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO8522A Watchparts Part NocaliberdescriptionoriginalArtno.401BHandsetting stem354-4559840354455