Seiko 5S21 Movement Details
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Sub-brands: | Spirit, Dolce, Avenue |
Battery: | SR920SW / 371 (Silver oxide) |
Accuracy: | ±20 seconds/month |
Day / date? | No |
GMT / world time? | No |
Chronograph? | No |
Alarm? | No |
Rate: | 32,768 Hz |
Number of jewels: | 7 |
Size / diameter: | 19.0mm x 22.0mm |
Height: | 2.3mm |
Development division: | Suwa (Nagano Prefecture, Japan) |
Notes: | Unusually for quartz movements, this has a sweeping seconds hand. |
PDF guides: | Technical guide : 5S21A |
Related movements: | 5S42 |
Part Codes
Stem code: | 351683 |
Screw codes: | 022411 |
Videos
Images
![Seiko movement 5S21A in model 5S21-5A20 (SACW020) from 1990.](/img/movements/5S21/Seiko_5S21A_1.jpg)
![Seiko model 5S21-5A20 (SACW020) from 1990.](/img/movements/5S21/Seiko_5S21-5A20.jpg)