The Seiko 2C20-5900 is a watch model based on the 2C20 movement.
Parts List
| RE9N79JN00 | crystal |
| 30N79NAA | crown |
| 0G1940B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 2C20
Seiko 2C20-5900 Watch Guide
The Seiko 2C20-5900 is a watch model based on the 2C20 movement.
| RE9N79JN00 | crystal |
| 30N79NAA | crown |
| 0G1940B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |