HATTORY-SEIKO 8V20BrandHATTORY-SEIKOCaliber8V20SizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno..8V20MAIN PLATE(PLASTIC)01000449840100044.8V20CENTER WHEEL BRIDGE01210799840121079.8V20TRAIN WHEEL BRIDGE01250489840125048.8V20CENTER WHEEL AND PINION02210289840221028.8V20FOURTH WHEEL AND PINION02410709840241070.8V20Hour wheel02710869840271086