HATTORY-SEIKO 4S79 Brand HATTORY-SEIKO Caliber 4S79 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4014S79Winding stem03512679840351267.4S79OPEN-CLOSE SPRING81333090