The Seiko 4N20-0940 is a watch model based on the 4N20 movement.
Parts List
| 135A02JN02 | crystal - crystal |
| 30M81DA4 | crown - crown |
| 30M91NA1 | crown |
| AC004BA11 | case back gasket - crown and stem gasket |
| 0F140BAA3 | case back gasket - case back gasket |
| W000BG | band - band |
| 2CA047A3BDG | others - minute hand |
| 1CA032A3BNG | others - hour hand |
| 0351155 | others - winding stem |
| 82833415 | others - case ring |
| 4N20094076A | others - case |
| 4N200940 | others - case back |
| 4N201520XA14 | others - dial |
| 4N2062 | others - machine code |