The Seiko 2C21-0110 is a watch model based on the 2C21 movement.
Parts List
| 250P01HN03 | crystal |
| 250W07HN00 | crystal |
| 40MM3NA1 | crown |
| 40MM3NS1 | crown - crown |
| 0B2580B01 | case back gasket - case back gasket |
| 86569330 | crystal gasket - plastic gasket for crystal |
| YN05A | band - band |
| YN050 | band - leather band |
| 81608219 | band - other |
| 81608239 | band - other |
| YN06A | band - other band |
| 2AB105A1BAE | others - minute hand |
| 11P63CSH | others - hour hand |
| 11P63CSM | others - minute hand |
| 11P63AKH | others - hour hand |
| 11P63AKM | others - minute hand |
| 11P63CGH | others - hour hand |
| 11P63CGM | others - minute hand |
| 11SC41T1 | others - second hand |
| 11SC41T2 | others - second hand |
| 1AB070A1BAE | others - hour hand |
| 3AA125F1A6S | others - second hand |
| 3AA125F1ANG | others - second hand |
| 0351226 | others - winding stem |
| 2C21011062C | others - case |
| 2C21011062 | others - case |
| 82714290 | others - case ring |
| 2C210110 | others - case back |
| 2C210110PV | others - case |
| 2C210470XB19 | others - dial |
| 2C210470XS19 | others - dial |
| 2C210470XS19A | others - dial |
| 2C2110 | others - machine code |
| 2C21011062D | others - case |
| 86205835 | others - decorative plate |
| EB0055B01 | others - crown and stem gasket |
| 86202691 | others - indicator plate |
| 86202695 | others - indicator plate |
| 86204735 | others - indicator plate |
Caliber 2C21
