HATTORY-SEIKO V421 Brand HATTORY-SEIKO Caliber V421 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.401V421Winding stem03541189840354118