The Seiko 2C21-5320 is a watch model based on the 2C21 movement.
Parts List
| 32N19NS1 | crown |
| 0F140NA11 | case back gasket |
| ZZ07A | band - band |
| 04P03NGH | others - hour hand |
| 04P03NGM | others - minute hand |
| 05SC01NG | others - second hand |
| 3BA075F1BNG | others - second hand |
| 81606439 | others - bracelet fixing pin |
| 81180229 | others - bracelet fixing pipe |
| 0351225 | others - winding stem |
| 2C210800XS14 | others - dial |
| 2C2110 | others - machine code |
| 2C2153202N | others - case |
Caliber 2C21
