HATTORY-SEIKO 2621 Brand HATTORY-SEIKO Caliber 2621 Size Function Version Hands Stem 354-263 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4012621Winding stem03542619840354261