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To charge other devices when your Spro is powered off:
1. Connect your Spro to your phone or other devices via a
USB cable (not included).
2. To turn on the Power Bank feature and start the charging,
press and hold the Power Bank Key until your Spro
vibrates, and then the indicator light will turn green and
flash.
3. When the charging completes, press and hold the Power
Bank Key until the indicator light turns off.
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