The Seiko W620-4230 is a watch model based on the W620 movement.
Parts List
| BA0P17L40A | crystal - crystal |
| BA0P17L40B | crystal - crystal |
| BA0P17L40C | crystal - crystal |
| 0F270BAA5 | case back gasket - case back gasket |
| 86640130 | crystal gasket - plastic gasket for crystal |
| 80631959 | pusher - button |
| 80633730 | pusher - front button |
| 7158ZZ | band - band |
| W620423079A | others - case |
| W620423079B | others - case |
| W620423079C | others - case |
| A180BS | others - push pin |
| W62030 | others - machine code |
| 82836970 | others - case ring |
| 81351639 | others - button spring |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BA11 | others - crown and stem gasket |
| 83200219 | others - button spring clip |