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It does need to be plugged in to power. No internal battery, which I believe is to help reduce heat. There is a mini-USB port at the top of the device, so if you keep an extra cable in your vehicle, you can pull it off the mount and plug it in with the cable to view it while you hold it.
Sorry, there was a problem. Please try again later.It needs to be plugged in for power, as soon as you unplug it, It turns off.
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