The Seiko 2C20-0120 is a watch model based on the 2C20 movement.
Parts List
| 155N21AA00 | crystal |
| 30N77NA1 | crown |
| 30N77NS1 | crown |
| 0H1400B01 | case back gasket - case back gasket |
| 0H1400B0 | case back gasket |
| DZ0065B0 | case back gasket |
| ZFA01G | band - leather band |
| ZFA01S | band - leather band |
| 06R09DZH | hand - hour hand |
| 06R09DZM | hand - minute hand |
| 07R03CGM | others - minute hand |
| 06R13DSM | others - minute hand |
| 1DA040A1BNS | others - hour hand |
| 2DA060A1BDS | others - minute hand |
| 82706570 | others - case ring |
| 2C20012025 | others - case |
| 2C2001202E | others - case |
| 2C200770XS13 | others - dial |
| 2C2010 | others - machine code |
| 2C201130XS19 | others - dial |
| A100AS | others - push pin |
| 1CA045A1BAA | others - hour hand |
Caliber 2C20
