HATTORY-SEIKO 4M21ABrandHATTORY-SEIKOCaliber4M21ASize11 1/2FunctionSC-AUT-KINETIKVersionHandsStem351-552Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)Mainspring (subs.)Battery3029-114 * = 30274MZWatchpartsPart NocaliberdescriptionoriginalArtno.4014M21Winding stem0351552984035155240004M21Electronic module40006769840400067649694M21Accumulator3027- 4MZ984030274MZ.4M21MAIN PLATE(PLASTIC)01005529840100552.4M21TRAIN WHEEL BRIDGE01255529840125552.4M21CENTER WHEEL AND PINION02215539840221553.4M21FOURTH WHEEL AND PINION02415559840241555.4M21Hour wheel02715579840271557.4M21Setting lever03835529840383552