The Seiko 2C20-6389 is a watch model based on the 2C20 movement.
Parts List
| SAFN19JN01 | crystal |
| 32N09NA1 | crown |
| 0F150NA11 | case back gasket - case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| R5004G | band - metal band |
| R5004G-BK3G | clasp - clasp |
| 04R09DGH | hand - hour hand |
| 04R09DGM | hand - minute hand |
| 2C2010 | others - machine code |
| 2C202840XB16 | others - dial |
| 2C20638925 | others - case |
| B080AS | others - push pin |
| 04R07DGM | others - minute hand |
| 04R07DGH | others - hour hand |
Caliber 2C20
