HATTORY-SEIKO 4312A Exploded diagram BrandHATTORY-SEIKOCaliber4312ASizeFunctionVersionHandsStem354-053 (TU)Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)BatteryWatchpartsPart NocaliberdescriptionoriginalArtno.401BHandsetting stem354-05398403540534060Coil -red4002-009025998.BBatteriebügel427002098404270020