The Seiko 2C21-5009 is a watch model based on the 2C21 movement.
Parts List
| SACN89JN00 | crystal |
| 30N77NA1 | crown |
| 30N77NS1 | crown |
| 0H1550B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| D5008G | band - metal band |
| D5008G-BK3G | clasp - clasp |
| 06S07DGH | hand - hour hand |
| 06S07DGM | hand - minute hand |
| 06SS03NG | hand - second hand |
| 2C210030XG14 | others - dial |
| 2C2110 | others - machine code |
| 2C21500925 | others - case |
| 83139350 | others - case ring |
| A110AS | others - push pin |
Caliber 2C21
