The Seiko 4N20-5650 is a watch model based on the 4N20 movement.
Parts List
| RE5A71SN02 | crystal - crystal |
| 6M35Y3KNG0 | crown - crown |
| 6M35Y3KNW0 | crown - crown |
| 0F200BA1S | case back gasket - case back gasket |
| XX000 | band - band |
| 1CA050SABDG | others - hour hand |
| 1CA050SABDS | others - hour hand |
| 2CA075SBBDG | others - minute hand |
| 2CA075SBBDS | others - minute hand |
| DZ0040B01 | others - crown and stem gasket |
| 0351155 | others - winding stem |
| 4N2056506EA | others - case |
| 82844490 | others - case ring |
| 4N20565093A | others - case |
| 4N202070XB13 | others - dial |
| 4N202070XB14 | others - dial |
| 4N202070XS13 | others - dial |
| 4N202070XS14 | others - dial |
| 4N2061 | others - machine code |