HATTORY-SEIKO Y975 Brand HATTORY-SEIKO Caliber Y975 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.401Y975Winding stem03517949840351794401Y975Winding stem03517939840351793