HATTORY-SEIKO S321 Brand HATTORY-SEIKO Caliber S321 Size Function Version Hands Stem Stem (subs.) Stem (2 pce) Balance staff Balance staff (subs.) Mainspring (subs.) Mainspring (subs.) Battery Watchparts Part NocaliberdescriptionoriginalArtno..S321Electronic module400180798404001807.S321BATTERY CLAMP422580198404225801.S321SWITCH CAM429580798404295807.S321SWITCH CAM SPRING445480798404454807.S321LIQUID CRYSTAL PANEL451063298404510632.S321LIQUID CRYSTAL PANEL451063398404510633.S321LIQUID CRYSTAL PANEL452052998404520529.S321SWITCH95020240.S321SWITCH95020243.S321SWITCH95020260.S321SWITCH95020263