The Seiko 2C20-6540 is a watch model based on the 2C20 movement.
Parts List
| ET0N29JN01 | crystal - crystal |
| 35NS9NA1 | crown - crown |
| DZ0065B01 | case back gasket - button gasket |
| 81609959 | band - other |
| 89969591 | band - other |
| 89969711 | band - other |
| 89969755 | band - other |
| PN14A | band - band |
| 09R05CGM | others - minute hand |
| 09R05AGH | others - hour hand |
| 0351226 | others - winding stem |
| 81351439 | others - button spring |
| 2C20654026 | others - case |
| 82800210 | others - case ring |
| 2C2010 | others - machine code |
| 2C203230XG19 | others - dial |
| 81504591 | others - screw |
| 81504615 | others - screw |
| 81504639 | others - screw |
Caliber 2C20
