Seiko 3M21 Movement Details

Seiko caliber 3M21 is a kinetic (formerly AGS) watch movement.
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Sub-brands: Dolce
Battery:3027.3MZ (replaces 3029.011) / (Rechargeable capacitor)
Accuracy:±15 seconds/month
Day / date?No
GMT / world time?No
Notes:Used in ladies watches. The same as cal. 3M22 but without a date display.
PDF guides: Technical supplement : 3M21A & 3M22A
Related movements: 3M22