HATTORY-SEIKO Y15W Brand HATTORY-SEIKO Caliber Y15W Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part 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