Seiko 850 Movement Details
Seiko calibre 850 is a hand winding watch movement. Production was in the 1960s.
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| Sub-brands: | Champion, Alpinist |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Rate: | 18,000 bph |
| Number of jewels: | 17 |
| Size / diameter: | 25.6mm (11 1/2") |
| Notes: | The same as cal. 860 but without date display. |
| Related movements: | 851 860 |