The Seiko 5621-7020 is a watch model based on the 5621 movement.
Parts List
| 300V16GN | crystal |
| 300V16GNS0 | crystal - mineral crystal |
| 300V16GNG0 | crystal |
| EC2818B | case back gasket |
| DJ0060B | others - crown gasket |
Other models with the same movement
| 5621-6000 |
| 5621-7000 |
| 5621-7021 |
| 5621-7022 |