The Seiko F231-4019 is a watch model based on the F231 movement.
Parts List
| RE4N65KZ40 | crystal |
| RE4N65KZ50 | crystal |
| 0H2550B01 | case back gasket |
| DH0070B01 | case back gasket - crown and stem gasket |
Other models with the same movement
| F231-4000 |
| F231-4009 |
| F231-4010 |
| F231-4020 |
| F231-5000 |