HATTORY-SEIKO 4N01 Exploded diagram Brand HATTORY-SEIKO Caliber 4N01 Size 4 3/4 Function SC Version Hands 0.65x1.10x0.20 Stem 351-155 Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery 379 MovementsArtno.brandcaliberSizehandsfunctionspecial160926HATTORY-SEIKO4N014 3/40.65x1.10x0.20SC Watchparts Part NocaliberdescriptionoriginalArtno.2504N01Hour wheel027129898402712982504N01Hour wheel027129698402712964014N01Winding stem035115698403511564014N01Winding stem0351155984035115540004N01Electronic module4000-419984040004194060Coil4002-41998404002419.4N01MAIN PLATE(PLASTIC)01001509840100150.4N01TRAIN WHEEL BRIDGE01252879840125287.4N01FOURTH WHEEL AND PINION02411319840241131.4N01FOURTH WHEEL AND PINION02411339840241133.4N01CENTER MINUTE WHEEL02702969840270296.4N01CENTER MINUTE WHEEL02702989840270298.4N01Setting lever03830539840383053