The Seiko 2C21-5290 is a watch model based on the 2C21 movement.
Parts List
| SADN69JN00 | crystal - crystal |
| 35NH5NS1 | crown - crown |
| 35NH5NA1 | crown |
| 0H1400B01 | case back gasket - case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| RS01A | band - band |
| RS02A | band - band |
| 06P03DGH | others - hour hand |
| 06P03DGM | others - minute hand |
| 06P03DSH | others - hour hand |
| 06P03DSM | others - minute hand |
| 06SC15NG | others - second hand |
| 06SC15NS | others - second hand |
| 3BA075F1BNG | others - second hand |
| 3BA075F1BNS | others - second hand |
| 0351225 | others - winding stem |
| 2C21529025 | others - case |
| 82717430 | others - case ring |
| 2C2152902E | others - case |
| 2C210750XG14 | others - dial |
| 2C210750XS13 | others - dial |
| 2C2110 | others - machine code |
| T070AS | others - push pin |
Caliber 2C21
