The Seiko 4N20-5030 is a watch model based on the 4N20 movement.
Parts List
| BA3W21SN01 | crystal |
| 27M19NA1 | crown - crown |
| 0F130BAA3 | case back gasket - case back gasket |
| TZ14A | band - metal band |
| 04Y21DGM | others - minute hand |
| 81181459 | others - bracelet fixing pipe |
| 81604219 | others - bracelet fixing pin |
| 4N200130XS14 | others - dial |
| 4N205030 | others - case back |
| 4N2050307N | others - case |
| 4N2061 | others - machine code |
| 82833110 | others - case ring |
| 0351155 | others - winding stem |
| DZ0040B01 | others - crown and stem gasket |
| 04Y21NGH | others - hour hand |