The Seiko 2C21-5350 is a watch model based on the 2C21 movement.
Parts List
| ESXN41JN00 | crystal |
| 35NH5NA1 | crown |
| 0F150NA11 | case back gasket - case back gasket |
| 0F140NA11 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| PL30A | band - leather band |
| 3BA075F1BNG | others - second hand |
| 1AA032A1BNG | others - hour hand |
| 2AA052A1BNG | others - minute hand |
| 05P01NGH | others - hour hand |
| T090AS | others - push pin |
| 0351225 | others - winding stem |
| 2C210920XS14 | others - dial |
| 2C2110 | others - machine code |
| 2C21535025 | others - case |
| 82721910 | others - case ring |
| 05P01NGM | others - minute hand |
| 05SC05NG | others - second hand |
| 1AA035A1BNG | others - hour hand |
Caliber 2C21
