HATTORY-SEIKO A557A Exploded diagram BrandHATTORY-SEIKOCaliberA557ASizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno..A557SOLAR BATTERY UNIT402083598404020835.A557LIQUID CRYSTAL PANEL451083598404510835