HATTORY-SEIKO 5421A Exploded diagram Brand HATTORY-SEIKO Caliber 5421A Size Function Version Hands Stem 354-705 Stem (subs.) 354-706 Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO5421A Watchparts Part NocaliberdescriptionoriginalArtno.4015421Winding stem035470698403547064015421Winding stem035470798403547074015421Winding stem0354705984035470540005421Elektro-Baugruppe4001-706984040017064060Coil -red4002-71598404002715.5421MAIN PLATE(PLASTIC)01017169840101716.5421TRAIN WHEEL BRIDGE01257159840125715.5421CENTER WHEEL AND PINION02217169840221716.5421FOURTH WHEEL AND PINION02417159840241715.5421Hour wheel02717159840271715.5421OPEN-CLOSE SPRING81331488