The Seiko 4N20-1000 is a watch model based on the 4N20 movement.
Parts List
| 140A02JN02 | crystal - crystal |
| 6M30B5NNG1 | crown - crown |
| 0F140BAA3 | case back gasket - case back gasket |
| D081BQ | band - metal band |
| D081CQ | band - metal band |
| 1CC037A1BNG | others - hour hand |
| 2CC055A1BNG | others - minute hand |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 81182699 | others - bracelet fixing pipe |
| 81609399 | others - bracelet fixing pin |
| 81609559 | others - bracelet fixing pin |
| 82833415 | others - case ring |
| 4N201000 | others - case back |
| 4N20100075A | others - case |
| 4N201630XG14 | others - dial |
| 4N201630XS14 | others - dial |
| 4N2061 | others - machine code |