SHIOJIRI Y520 Brand SHIOJIRI Caliber Y520 Size 11.50mm Function o. SC Version Hands 0.45x0.90 Stem 351-930 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery MovementsArtno.brandcaliberSizehandsfunctionspecial160915HATTORY-SEIKO1E2011.50mm0.45x0.90o. SC Watchparts Part NocaliberdescriptionoriginalArtno.401Y520Winding stem03519309840351930.Y520MAIN PLATE(PLASTIC)01019349840101934.Y520TRAIN WHEEL BRIDGE01259349840125934.Y520CENTER WHEEL AND PINION02219309840221930.Y520FOURTH WHEEL AND PINION02419309840241930.Y520Hour wheel02719309840271930.Y520Setting lever03839309840383930