Seiko 8221 Movement Details
Seiko caliber 8221 is an analog quartz watch movement. Production was in the 1980s.
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| Sub-brands: | Silverwave |
| Battery: | SR936SW / 394 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | Yes |
| Number of jewels: | 4 |
| Size / diameter: | 24.0mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | The same as cal. 8222 but without date display. |
| Related movements: | 8222 8223 |
Part Codes
| Screw codes: | 022256, 022744 |