The Seiko 2C20-5320 is a watch model based on the 2C20 movement.
Parts List
| ESLN87AN00 | crystal |
| 35NH5NA1 | crown |
| 0E150NA1S | case back gasket - case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
Caliber 2C20
Seiko 2C20-5320 Watch Guide