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 |
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