Seiko Caliber 4N20 No technical information found for this movement.Watches with the 4N20 movement4N20-00184N20-00194N20-00284N20-00294N20-00304N20-003A4N20-00404N20-00424N20-00584N20-00594N20-00684N20-00694N20-00784N20-00794N20-00884N20-00894N20-00904N20-00924N20-00934N20-009P4N20-009S4N20-01004N20-01104N20-01204N20-01304N20-01404N20-01504N20-015A4N20-01694N20-01704N20-01894N20-01994N20-02194N20-02294N20-02404N20-024A4N20-02504N20-02604N20-02704N20-02804N20-028A4N20-02904N20-029A4N20-029B4N20-03004N20-03104N20-031A4N20-03204N20-03304N20-03404N20-03504N20-03604N20-03704N20-03804N20-03904N20-04004N20-04204N20-042A4N20-04304N20-04404N20-04504N20-04604N20-04904N20-05094N20-05204N20-05304N20-05404N20-054A4N20-05504N20-05604N20-05804N20-05904N20-06304N20-06404N20-06504N20-06604N20-06704N20-06804N20-06904N20-07004N20-07104N20-07204N20-07304N20-07404N20-07504N20-07704N20-07804N20-078A4N20-07904N20-08004N20-08104N20-08204N20-08304N20-08404N20-08504N20-08604N20-08704N20-08804N20-08904N20-089A4N20-09004N20-09304N20-09404N20-09414N20-09504N20-095A4N20-09604N20-096A4N20-09704N20-09804N20-09904N20-10004N20-10104N20-10204N20-10304N20-10404N20-10504N20-10604N20-10704N20-10904N20-11004N20-11104N20-11204N20-11304N20-11404N20-11504N20-50204N20-50224N20-50304N20-50324N20-50404N20-50424N20-50504N20-50524N20-50604N20-50624N20-50704N20-50724N20-50804N20-50824N20-50984N20-50994N20-51084N20-51094N20-51104N20-51294N20-51504N20-51604N20-51704N20-51804N20-51904N20-52004N20-520A4N20-52194N20-52404N20-52504N20-52604N20-52704N20-52804N20-52904N20-53004N20-53304N20-53404N20-53504N20-53604N20-53704N20-53804N20-53904N20-54104N20-54204N20-54304N20-54404N20-54504N20-54604N20-54704N20-54804N20-54904N20-55004N20-55104N20-55204N20-55304N20-55504N20-55604N20-55704N20-55804N20-55904N20-56004N20-56104N20-56204N20-56304N20-56404N20-56504N20-56604N20-5670