The Seiko 5856-8020 is a watch model based on the 5856 movement.
Parts List
| 300W63GA00 | crystal |
| 40M87NS9 | crown |
| EZ2905B04 | case back gasket |
| EZ2990B05 | case back gasket |
| 300W63GA00 | crystal |
| 40M87NS9 | crown |
| EZ2905B04 | case back gasket |
| EZ2990B05 | case back gasket |
Other models with the same movement
| 5856-5000 |
| 5856-5010 |
| 5856-5020 |
| 5856-7010 |
| 5856-7020 |
| 5856-7030 |
| 5856-7040 |
| 5856-8000 |
| 5856-8001 |
| 5856-8010 |
| 5856-8021 |
| 5856-8030 |
| 5856-8050 |
| 5856-8060 |
| 5856-8070 |
| 5856-8080 |
| 5856-8090 |