The speaker was quite large. And it hurts to carry it with you and not hold anything with your hands. We took 3 AA batteries, but even with the power off and the blue light went out, it still worked. It was draining my batteries 24 hours a day, 7 days a week. I didn't want to plug and unplug the batteries every time as the mounting plate would likely break after a short while. I had to send it back.
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