Seiko Cal. 3M22 Instructions Manual page 13

* There will be about 1 day (Cal. 3M22/4M21) / 2 days (Cal. 5M42/5M43) of power
available.
* It is not necessary to charge the capacitor fully before you wear the watch. While
the watch is on your arm, the Automatic Power Generator will ensure constant
operation.
4. Set the time and calendar, and put on the watch.
* We recommend that the watch be worn daily for at least 10 hours.
* Even if the watch is worn on your arm, it will not be charged while your arm is not
in motion.
Notes:
1. To charge the capacitor efficiently, swing the watch from side to side, making an arc
of about 20 cm.
2. No additional benefit is obtained by swinging the watch more quickly or with greater
vigor.
3. When the watch is swung, the oscillating weight in the generating system rotates to
drive the mechanism. As it rotates, it gives out sound, which is not a malfunction.
4. Provided with an instant-start function, the watch may start operating after it is
swung several times. For details, see "INSTANT-START FUNCTION" on page 20.
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