HATTORY-SEIKO 1320 Exploded diagram BrandHATTORY-SEIKOCaliber1320SizeFunctionVersionHandsStem351-130Stem (subs.)351-131Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryMovementsArtno.brandcaliberSizehandsfunctionspecialHATTORY-SEIKO1320 WatchpartsPart NocaliberdescriptionoriginalArtno.4060Coil -red4002-13098404002130