The Seiko 2C21-5149 is a watch model based on the 2C21 movement.
Parts List
| ESSN99JN00 | crystal |
| 32N09NA1 | crown |
| 32N09NS1 | crown |
| 0H1350B01 | case back gasket |
| DH0100B01 | case back gasket - crown and stem gasket (4h) |
| D5018G | band - metal band |
| D5018S | band - metal band |
| D5018S-BK3S | clasp - clasp |
| D5018G-BK3G | clasp - clasp |
| 05S03DGH | hand - hour hand |
| 05S03DGM | hand - minute hand |
| 05S03DSH | hand - hour hand |
| 05S03DSM | hand - minute hand |
| 05SS01NS | hand - second hand |
| 05SS01NG | others - second hand |
| T070AS | others - push pin |
| 2C210420XG14 | others - dial |
| 2C210420XS23 | others - dial |
| 2C2110 | others - machine code |
| 2C21514925 | others - case |
| 2C2151492E | others - case |
| 82713750 | others - case ring |
Caliber 2C21
