HATTORY-SEIKO V636 Brand HATTORY-SEIKO Caliber V636 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.401V636Winding stem03512959840351295.V636CONDUCTING PLATE86510859