The Seiko 2C21-0340 is a watch model based on the 2C21 movement.
Parts List
| 185W19HN01 | crystal |
| 185P01HN03 | crystal - crystal |
| 32M15NA1 | crown - crown |
| 0F145BAA9 | case back gasket |
| 86572890 | crystal gasket |
| KK21A | band - leather band |
| 3BA075F1BNG | others - second hand |
| 07SC17NG | others - second hand |
| EB0055B01 | others - crown and stem gasket |
| 0351225 | others - winding stem |
| 82712510 | others - case ring |
| 2C2103407C | others - case |
| 2C2110 | others - machine code |
| 2C211210XG18 | others - dial |
| A120AS | others - push pin |
| 08P29C5H | others - hour hand |
| 08P29C5M | others - minute hand |
Caliber 2C21
