HATTORY-SEIKO 6S77 Brand HATTORY-SEIKO Caliber 6S77 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno.4016S77Winding stem03514309840351430.6S77DATE DIAL08783449840878344.6S77DATE DIAL08789629840878962