Seiko 2C21 Movement Details
Seiko caliber 2C21 is an analog quartz watch movement. Production was in the 1980s.
| Battery: | SR521SW / 379 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Number of jewels: | 2 |
| Size / diameter: | 15.1mm |
| Height: | 2.4mm |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | The same as cal. 2C20 but with a seconds hand and battery life indicator function. |
| PDF guides: | Technical guide : 2C20A & 2C21A |
| Related movements: | 2C20 |
Part Codes
| Stem code: | 351225, 351226, 351227 |
| Screw codes: | 012490, 012796, 012799, 012820 |