Seiko 8420 Movement Details
Seiko calibre 8420 is a high grade analogue quartz watch movement. Production was in the 1980s.
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| Sub-brands: | Exceline, Credor, Lassale |
| Battery: | SR616SW / 321 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Hacking? | No |
| Rate: | 32,768 Hz |
| Number of jewels: | 6 |
| Size / diameter: | 14.9mm |
| Height: | 1.7mm |
| Development division: | Daini (Kameido, Tokyo, Japan),Suwa (Nagano Prefecture, Japan) |
| PDF guides: | Technical guide : 8420A |
Part Codes
| Stem code: | 354815 |