HATTORY-SEIKO 2G78 Brand HATTORY-SEIKO Caliber 2G78 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4012G78Winding stem03512269840351226