HATTORY-SEIKO 4302A Exploded diagram BrandHATTORY-SEIKOCaliber4302ASizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.4060Coil -red4002-009025998