The Seiko 4N20-5630 is a watch model based on the 4N20 movement.
Parts List
| RE5A57JN02 | crystal - crystal |
| 6M35E7SNG0 | crown - crown |
| 6M35E7SNW0 | crown - crown |
| 0F170BA1S | case back gasket - case back gasket |
| D189AB | band - band |
| D189BB | band - band |
| D189AB-BK00 | clasp - clasp |
| 1CA040A7BNG | others - hour hand |
| 1CA040A7BNS | others - hour hand |
| 2CA057A5BNG | others - minute hand |
| 2CA057A5BNS | others - minute hand |
| 81606359 | others - bracelet fixing pin |
| 4N202020XA13 | others - dial |
| 4N202020XA24 | others - dial |
| 4N202020XB13 | others - dial |
| 4N2061 | others - machine code |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 81190875 | others - bracelet fixing pipe |
| 4N20563075A | others - case |
| 82844150 | others - case ring |
| 4N205630 | others - case back |
| 4N20563079A | others - case |