HATTORY-SEIKO S031 Brand HATTORY-SEIKO Caliber S031 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno..S031Electronic module400029398404000293.S031INSULATOR421629398404216293.S031INSULATOR421629498404216294.S031BATTERY CONNECTION(-)427029398404270293.S031ROTARY STEP SWITCH429001698404290016.S031CONDUCTING PLATE445900198404459001.S031LIQUID CRYSTAL PANEL451027498404510274