The Seiko 7431-5270 is a watch model based on the 7431 movement.
Parts List
| ES8W31HN00 | crystal |
| 35M17N | crown |
| 0G235BAA3 | case back gasket |
| EB0055B01 | others - crown and stem gasket |
Caliber 7431
Seiko 7431-5270 Watch Guide
The Seiko 7431-5270 is a watch model based on the 7431 movement.
| ES8W31HN00 | crystal |
| 35M17N | crown |
| 0G235BAA3 | case back gasket |
| EB0055B01 | others - crown and stem gasket |