The Seiko 2C20-6450 is a watch model based on the 2C20 movement.
Parts List
| SAFN25AN | crystal |
| SAFN25AN01 | crystal |
| 32N09NA1 | crown |
| 0F140NA11 | case back gasket |
| 0E140BA1 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| N5006G | band - metal band |
| N5006G-BK3G | clasp - clasp |
| 2CA047A3BDG | others - minute hand |
| 1CA032A3BNG | others - hour hand |
| 1DA032A3BNG | others - hour hand |
| 1DG035LABDG | others - hour hand |
| 05R07DGH | others - hour hand |
| 2C2010 | others - machine code |
| 2C202990XG14 | others - dial |
| 2C202990XS14 | others - dial |
| 2C203000XL14 | others - dial |
| 2C203000XR14 | others - dial |
| 2C20645025 | others - case |
| 82730270 | others - case ring |
| B080AS | others - push pin |
| 05R07DGM | others - minute hand |
| 05R17DGM | others - minute hand |
Caliber 2C20
