The Seiko 7431-5154 is a watch model based on the 7431 movement.
Parts List
| RE7N85SE10 | crystal |
| 35N85DA5 | crown - crown |
| 0H2200B01 | case back gasket - rotating bezel gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 7431
Seiko 7431-5154 Watch Guide