The Seiko 2C20-0420 is a watch model based on the 2C20 movement.
Parts List
| 245N09HN00 | crystal |
| 30N77NA1 | crown |
| 0G2450B0A | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| 0G2125B01 | case back gasket - case back gasket |
| AK52B | band - band |
| ZMJ04G | band - leather band |
| 10R09DGH | hand - hour hand |
| 10R09DGM | hand - minute hand |
| 11R07DBH | others - hour hand |
| 11R07DBM | others - minute hand |
| 82300132 | others - bezel |
| 2C20042025A | others - case |
| 2C200420J3 | others - case |
| 2C2010 | others - machine code |
| 2C202470XS14 | others - dial |
| 2C203270XS19 | others - dial |
| 82300136 | others - bezel |
| A160BS | others - push pin |
Caliber 2C20
