HATTORY-SEIKO 7S55 Exploded diagram Brand HATTORY-SEIKO Caliber 7S55 Size Function Version Hands Stem 351-260 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4017S55Winding stem035126098403512604017S55Winding stem03541769840354176.7S55MAIN PLATE(PLASTIC)01003049840100304.7S55MAIN PLATE(PLASTIC)01003059840100305.7S55CENTER WHEEL AND PINION02240789840224078.7S55FOURTH WHEEL AND PINION02410109840241010.7S55Hour wheel02714839840271483.7S55Setting lever03830709840383070.7S55DATE DIAL08782709840878270.7S55DATE DIAL08782719840878271