Seiko 7770 Movement Details
Seiko caliber 7770 is a high grade analog quartz watch movement. Production was in the 1980s.
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| Sub-brands: | Credor |
| Battery: | SR916SW / 373 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Rate: | 32,768 Hz |
| Number of jewels: | 6 |
| Development division: | Daini (Kameido, Tokyo, Japan) |
| Notes: | The same as cal. 7771 but without a seconds hand. |
| Related movements: | 7750 7771 7779 |
Part Codes
| Stem code: | 354371 |