The Seiko 2C20-5110 is a watch model based on the 2C20 movement.
Parts List
| RE7N83HN00 | crystal |
| 32N07NA5 | crown - crown |
| 0H1700B01 | case back gasket - bezel gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
Caliber 2C20
Seiko 2C20-5110 Watch Guide