HATTORY-SEIKO Y157BrandHATTORY-SEIKOCaliberY157SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery3023-24YMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKOY157... WatchpartsPart NocaliberdescriptionoriginalArtno.3023Accumulator - Capacitor3023-24Y9840302324Y