HATTORY-SEIKO 5Y31 Exploded diagram Brand HATTORY-SEIKO Caliber 5Y31 Size 10 1/2 Function SC Version Hands 0.65x1.10 Stem 351-670 Stem (subs.) 351-105 lang Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 371 MovementsArtno.brandcaliberSizehandsfunctionspecial166671HATTORY-SEIKO5Y3110 1/20.65x1.10SC Watchparts Part NocaliberdescriptionoriginalArtno.4015Y31Winding stem035167098403516704015Y31Winding stem035167198403516714060Coil -red4002-521 / -52298404002521.5Y31MAIN PLATE(PLASTIC)01006909840100690.5Y31TRAIN WHEEL BRIDGE01256729840125672.5Y31CENTER WHEEL AND PINION02216739840221673.5Y31FOURTH WHEEL AND PINION02416739840241673.5Y31Hour wheel02716739840271673.5Y31Setting lever03836709840383670
