The Seiko 6309-8770 is a watch model based on the 6309 movement.
Parts List
| 300W96GN00 | crystal |
| 40M58NA1 | crown - crown |
| 40M58NS1 | crown - crown |
| FH2980B01 | case back gasket - case back gasket |
| DJ0060B01 | others - crown gasket |
Caliber 6309
Seiko 6309-8770 Watch Guide