HATTORY-SEIKO 6201BBrandHATTORY-SEIKOCaliber6201BSizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.721Balnace cplt. -for shock-absorber310-6109840310610