The Seiko 2C20-5680 is a watch model based on the 2C20 movement.
Parts List
| SAEN15JN00 | crystal |
| 30NA7NA1 | crown - crown |
| 30N79NA5 | crown |
| 0H1700B01 | case back gasket - bezel gasket |
| DZ0065B01 | case back gasket - button gasket |
Caliber 2C20
Seiko 2C20-5680 Watch Guide