Seiko 2B21 Movement Details
Seiko caliber 2B21 is an analog quartz watch movement. Production was in the 1980s.
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Sub-brands: | Seiko 5 |
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 |
Development division: | Daini (Kameido, Tokyo, Japan) |
Notes: | Used in ladies watches. |
PDF guides: | Technical guide : 2B21A |
Related movements: | 2B20 2B31 |
Part Codes
Stem code: | 354235 |
Screw codes: | 012010, 012024, 012495, 012818, 012819 |