The Seiko 6600-9991 is a watch model based on the 6600 movement.
Parts List
| 318N02AN | crystal |
| 318N02AN00 | crystal |
| 45R03NA1 | crown |
Caliber 6600
Seiko 6600-9991 Watch Guide
The Seiko 6600-9991 is a watch model based on the 6600 movement.
| 318N02AN | crystal |
| 318N02AN00 | crystal |
| 45R03NA1 | crown |