Seiko 2B31 Movement Details
Seiko caliber 2B31 is an analog quartz watch movement.
Battery: | SR521SW / 379 (Silver oxide) |
Accuracy: | ±20 seconds/month |
Day / date? | No |
GMT / world time? | No |
Chronograph? | No |
Number of jewels: | 1 |
Size / diameter: | 15.1mm |
Height: | 2.4mm |
Stem code: | 351134 |
Development division: | Daini (Kameido, Tokyo) |
Notes: | Used in ladies watches. |
PDF guides: | Technical guide for 2B31A |
Related movements: | 2B20 2B21 |