The Seiko 5931-5420 is a watch model based on the 5931 movement.
Parts List
| ES8N37SN00 | crystal |
| 35N85DA5 | crown - crown |
| 0H2270B02 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 5931
Seiko 5931-5420 Watch Guide
The Seiko 5931-5420 is a watch model based on the 5931 movement.
| ES8N37SN00 | crystal |
| 35N85DA5 | crown - crown |
| 0H2270B02 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |