Seiko 1M20 Movement Details
Seiko caliber 1M20 is a kinetic (formerly AGS) watch movement.
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| Battery: | 3027.26Y / (Rechargeable capacitor) |
| Accuracy: | ±15 seconds/month |
| Day / date? | No |
| GMT / world time? | No |
| Chronograph? | No |
| Number of jewels: | 8 |
| Size / diameter: | 19.4mm |
| Height: | 3.4mm |
| Notes: | Used in ladies watches. |
| PDF guides: | Technical guide : 1M20A |
Part Codes
| Stem code: | 351555 |
| Screw codes: | 022436, 022490 (screw for oscillating weight) |