Seiko 1E20 Movement Details
Seiko calibre 1E20 is an analogue quartz watch movement.
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| Sub-brands: | Tissé |
| Battery: | SR512SW / 335 (Silver oxide) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Number of jewels: | 5 |
| Size / diameter: | 8.5mm |
| Height: | 2.7mm |
| Development division: | Suwa (Nagano Prefecture, Japan) |
| Notes: | Used in ladies watches. |
| PDF guides: |
Technical guide
: 1E20A & 1E50A
Parts list : 1E20A |
| Related movements: | 1E50 1E70 |
Part Codes
| Stem code: | 354930 (tap 13) |
| Screw codes: | 022342, 022343 |