The Seiko M422-500A is a watch model based on the M422 movement.
Parts List
| BA4W85LN01 | crystal |
| BA4W85LN | crystal |
| FE298BAA1 | case back gasket - case back gasket |
| EG0060B0 | case back gasket |
| 86588910 | crystal gasket |
| 80639099 | pusher |
| E1020S | band |
| A180BS | others - push pin |
| M42213 | others - machine code |
| M42250009989 | others - panel cover |
| M422500A | others - case back |
| M422500A62 | others - case |
| EG0060B01 | others - button gasket |
| 83200241 | others - button spring clip |
Other models with the same movement
| M422-5000 |
| M422-5010 |
| M422-501A |