Seiko 7550 Movement Details
Seiko caliber 7550 is an analog quartz watch movement. Production was in the 1980s.
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| Battery: | SR43SW / 301 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Rate: | 32,768 Hz |
| Number of jewels: | 5 |
| Size / diameter: | 27.0mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Used in "railway" pocket watches. |
| Related movements: | 7559 |
Part Codes
| Stem code: | 354371, 354602 |