HATTORY-SEIKO 7F87BrandHATTORY-SEIKOCaliber7F87SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4017F87Winding stem035167098403516704017F87Winding stem03515759840351575.7F87MAIN PLATE(PLASTIC)01005719840100571.7F87TRAIN WHEEL BRIDGE01256719840125671.7F87CENTER WHEEL AND PINION02215729840221572.7F87FOURTH WHEEL AND PINION02415729840241572.7F87Hour wheel02715739840271573.7F87Setting lever03836709840383670