HATTORY-SEIKO 5P31A Exploded diagram BrandHATTORY-SEIKOCaliber5P31ASize10 1/2FunctionSCVersionHandsStem351-671Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecial166626HATTORY-SEIKO5P31A10 1/2SC WatchpartsPart NocaliberdescriptionoriginalArtno.4015P31Winding stem035167098403516704015P31Winding stem035167198403516714015P31Winding stem035110598403511054015P31Winding stem0351672984035167240005P31Electronic module4001521984040015214060Coil -red400252198404002521.5P31TRAIN WHEEL BRIDGE01256709840125670.5P31CENTER WHEEL AND PINION02216719840221671.5P31CENTER WHEEL AND PINION02216739840221673.5P31FOURTH WHEEL AND PINION02416719840241671.5P31FOURTH WHEEL AND PINION02416739840241673.5P31Hour wheel02716739840271673.5P31Hour wheel02716749840271674.5P31Setting lever03836709840383670.5P31BACK PLATE87020163.5P31BACK PLATE87020420