The Seiko 8522-5020 is a watch model based on the 8522 movement.
Parts List
| ESDN13LN00 | crystal |
| 35N57NJ1 | crown |
| 35N57NA1 | crown - chrom |
| 0H2150B02 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| 354-455 | others |
Caliber 8522
Seiko 8522-5020 Watch Guide