The Seiko 4N20-5290 is a watch model based on the 4N20 movement.
Parts List
| RE1A37S20A | crystal |
| 30M15DA5 | crown |
| 30M15D05 | crown - crown |
| 0H1900B01 | case back gasket - case back gasket |
| AC004BA11 | case back gasket - crown and stem gasket |
| DK11E | band - leather band |
| DK12E | band - leather band |
| 1CA040LABDG | others - hour hand |
| 0351155 | others - winding stem |
| 82852730 | others - case ring |
| 4N201050XB19 | others - dial |
| 4N201050XS19 | others - dial |
| 4N205290 | others - case back |
| 4N20529026A | others - case |
| 4N2052902EA | others - case |
| 4N2061 | others - machine code |
| A120AS | others - push pin |
| 2CA060LABDG | others - minute hand |