The Seiko M422-501A is a watch model based on the M422 movement.
Parts List
| ESDW95LN01 | crystal - crystal |
| ESDW95LN | crystal |
| FH2980B0B | case back gasket |
| EA0090B0A | case back gasket - button gasket |
| EA0090B0 | case back gasket |
| 86589150 | crystal gasket - plastic gasket for crystal |
| 80639039 | pusher - button |
| ZRA24S | band - rubber band |
| G1446S | band - band |
| 83200379 | others - button spring clip |
| M422501A61 | others - case |
| M422501A | others - case back |
| A200CS | others - push pin |
| M42213 | others - machine code |
| M42250109989 | others - panel cover |
| 81350480 | others - button spring |
Other models with the same movement