The Seiko 2C21-0120 is a watch model based on the 2C21 movement.
Parts List
| 290A02JN02 | crystal - crystal |
| 290N41JN00 | crystal - crystal |
| 35NR5NA1 | crown |
| 35NR5NS1 | crown |
| 35NR5NH1 | crown - crown |
| 0H2550B01 | case back gasket |
| DZ0065B01 | case back gasket - button gasket |
| AK92F | band - band |
| YK08B | band - band |
| YK07B | band - band |
| GK40A | band - band |
| LL30A | band - band |
| 3AA125F1A6S | others - second hand |
| 3AA125F1ANG | others - second hand |
| 12P67DBH | others - hour hand |
| 12P67DBM | others - minute hand |
| 12SC21XA | others - second hand |
| 12SC21XR | others - second hand |
| 12SC39T2 | others - second hand |
| 13P03APM | others - minute hand |
| 13SC09HL | others - second hand |
| 1AA085A1BAH | others - hour hand |
| 1AA085A1BAJ | others - hour hand |
| 1AH080A1BNB | others - hour hand |
| 2AA125A1BAK | others - minute hand |
| 2AH115A1BNB | others - minute hand |
| 3AA125F3AAH | others - second hand |
| 3AA125F3AAL | others - second hand |
| 3AA125F3AAR | others - second hand |
| 12P01NGH | others - hour hand |
| 12P01NGM | others - minute hand |
| 12P01NSH | others - hour hand |
| 12P01NSM | others - minute hand |
| 12SC39T1 | others - second hand |
| 1AA085A1BNG | others - hour hand |
| 1AA085A1BNS | others - hour hand |
| 2AA120A1BNG | others - minute hand |
| 2AA120A1BNS | others - minute hand |
| 2C2101201B | others - case |
| 82712390 | others - case ring |
| 2C2101202EA | others - case |
| 2C210480XG14 | others - dial |
| 2C210480XS13 | others - dial |
| 2C210680XL14 | others - dial |
| 2C2110 | others - machine code |
| 2C211120XS19 | others - dial |
| 2C211450XS13 | others - dial |
| 2C211510XG14 | others - dial |
| 2C211610XS19 | others - dial |
| 2C211640XB13 | others - dial |
| 2C211660XS14 | others - dial |
| A170AS | others - push pin |
| 2C21012025 | others - case |
| 0351226 | others - winding stem |
| 2C21012025X | others - case |
| 2C21012025Y | others - case |
| 2C21012025Z | others - case |
| 2C2101202E | others - case |
| 2AA120A1BAA | others - minute hand |
| 1AA085A1BAA | others - hour hand |
Caliber 2C21
