The Seiko 2C21-5430 is a watch model based on the 2C21 movement.
Parts List
| ES9W65HN01 | crystal - crystal |
| 32M15NA1 | crown - crown |
| 0F175BAA5 | case back gasket - case back gasket |
| 86572190 | crystal gasket - plastic gasket for crystal |
| ML44A | band - band |
| ML45A | band - band |
| 3BA075F1BNG | others - second hand |
| 07P29NGM | others - minute hand |
| 1AA047A1BNG | others - hour hand |
| 2AA070A1BNG | others - minute hand |
| 07P29NGH | others - hour hand |
| 07SC43NG | others - second hand |
| A130AS | others - push pin (for lb) |
| 2C2110 | others - machine code |
| 2C211070XB14 | others - dial |
| 2C211070XG14 | others - dial |
| 2C21543075 | others - case |
| 82723430 | others - case ring |
| 0351225 | others - winding stem |
| EB0055B01 | others - crown and stem gasket |
Caliber 2C21
