The Seiko 2C21-5270 is a watch model based on the 2C21 movement.
Parts List
| ESWN01JN00 | crystal |
| 32N09NA1 | crown |
| 0F140NA11 | case back gasket |
| 0E140BA1 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| BEZ01G | band - leather band |
| GEZ01G | band - leather band |
| 06S11DHM | hand - minute hand |
| 05SS03NG | others - second hand |
| 06S11DHH | others - hour hand |
| 2C210700XN14 | others - dial |
| 2C2110 | others - machine code |
| 2C21527025 | others - case |
| T090AS | others - push pin |
Caliber 2C21
