The Seiko 2C20-6420 is a watch model based on the 2C20 movement.
Parts List
| SA4W39HN01 | crystal - crystal |
| 35E29NS1 | crown |
| 35E29NA1 | crown |
| 0F205BAA1 | case back gasket - case back gasket |
| 86572350 | crystal gasket - plastic gasket for crystal |
| GZ07A | band - band |
| GZ09A | band - band |
| 07R17DGH | others - hour hand |
| 07R17DGM | others - minute hand |
| 07R17DSH | others - hour hand |
| 07R17DSM | others - minute hand |
| EB0055B0A | others - crown and stem gasket |
| 0351225 | others - winding stem |
| 2C20642061 | others - case |
| 82723630 | others - case ring |
| 2C20642075 | others - case |
| 2C2010 | others - machine code |
| 2C202900XG14 | others - dial |
| 2C202900XS13 | others - dial |
| A130BS | others - push pin |
Caliber 2C20
