The Seiko Y491-4080 is a watch model based on the Y491 movement.
Parts List
| SAAN71LM10 | crystal |
| SAAN71LM40 | crystal |
| SAAN71LM50 | crystal |
| SAAN71LM60 | crystal |
Other models with the same movement
| Y491-4000 |
| Y491-4010 |
| Y491-4060 |
| Y491-4070 |
| Y491-4090 |
| Y491-4100 |
| Y491-4110 |
| Y491-4120 |
| Y491-4190 |
| Y491-4200 |
| Y491-5000 |
| Y491-500A |
| Y491-500B |
| Y491-500C |
| Y491-5010 |