The Seiko 7731-5030 is a watch model based on the 7731 movement.
Parts List
| SA3W33SN00 | crystal |
| 30M09NS5 | crown |
| 30M09NA5 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0F270NAA1 | case back gasket |
The Seiko 7731-5030 is a watch model based on the 7731 movement.
| SA3W33SN00 | crystal |
| 30M09NS5 | crown |
| 30M09NA5 | crown |
| 0Z0034B01 | case back gasket - crown and stem gasket |
| 0F270NAA1 | case back gasket |