The Seiko 6309-720B is a watch model based on the 6309 movement.
Parts List
| 300WD0GN | crystal |
| 40M58NS | crown |
| FH2980B | case back gasket |
| DJ0060B | others - crown gasket |
Caliber 6309
Seiko 6309-720B Watch Guide
The Seiko 6309-720B is a watch model based on the 6309 movement.
| 300WD0GN | crystal |
| 40M58NS | crown |
| FH2980B | case back gasket |
| DJ0060B | others - crown gasket |