HATTORY-SEIKO Y15WBrandHATTORY-SEIKOCaliberY15WSizeFunctionVersionHandsStemStem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401Y15WWinding stem03518079840351807.Y15WMAIN PLATE(PLASTIC)01018089840101808.Y15WMAIN PLATE(PLASTIC)01018179840101817.Y15WTRAIN WHEEL BRIDGE01258069840125806.Y15WTRAIN WHEEL BRIDGE01258079840125807.Y15WCENTER WHEEL AND PINION02218099840221809.Y15WCENTER WHEEL AND PINION02218119840221811.Y15WFOURTH WHEEL AND PINION02418189840241818.Y15WHour wheel02718039840271803.Y15WHour wheel02718079840271807.Y15WSetting lever03838069840383806