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
Stem code: 351555
Screw codes: 022436, 022490 (screw for oscillating weight)
Notes:Used in ladies watches.
PDF guides: Technical guide : 1M20A