Turn on/off: Switch to “ON” place,(the on/off switch is hidden in the sponge ball),plug the Audio port into your Motorola Droid Razr Maxx Xoom.Charging method: Switch to “OFF” place, insert the Audio port to the Audio socket on the USB charge cable, connect your USB port to any 5V-USB power interface (e.g. laptop USB port),it’s charging when the red light bright, and the light will turn blue when it’s full charged.
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