The Seiko 2639-5039 is a watch model based on the 2639 movement.
Parts List
| SA8N41KN00 | crystal |
| 35N53NA1 | crown |
| 0H2370B02 | case back gasket |
| DH0070B01 | case back gasket - crown and stem gasket |
Caliber 2639
Other models with the same movement
| 2639-5000 |
| 2639-5010 |
| 2639-5020 |
| 2639-5030 |
| 2639-7000 |
| 2639-7009 |
| 2639-8000 |
| 2639-8009 |