The Seiko 6431-7000 is a watch model based on the 6431 movement.
Parts List
| 280N10GN00 | crystal - mineral crystal |
| 35R34NS1 | crown - crown |
| 35R36NA3 | crown - crown |
| 0H2703N01 | case back gasket |
| 0Z2703N01 | case back gasket - bezel gasket |
Caliber 6431
Seiko 6431-7000 Watch Guide