Seiko Cal. 3M22 Instructions Manual page 16

3. Another 400 to 500 swings, 800 to 1,000 swings in total, will reserve up to 4 days of
power.
4. An additional 600 to 750 swings, 1,400 to 1,750 swings in total, will reserve more than
7 days of power, and fully charge the capacitor.
* The watch is equipped with a system to prevent overcharge. Even if it is further
swung after being fully charged, no malfunction will result.
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