The Seiko 2620-5640 is a watch model based on the 2620 movement.
Parts List
| ES7N71KN00 | crystal |
| 35NA5NJ1 | crown |
| 35NA5NA1 | crown |
| DH0070B01 | case back gasket - crown and stem gasket |
Caliber 2620
Seiko 2620-5640 Watch Guide
The Seiko 2620-5640 is a watch model based on the 2620 movement.
| ES7N71KN00 | crystal |
| 35NA5NJ1 | crown |
| 35NA5NA1 | crown |
| DH0070B01 | case back gasket - crown and stem gasket |