Viofo A139 Pro Review: Cables, Cables Everywhere

Offering 4K resolution, interior and rear cameras, and a smart mobile app, the Viofo A139 Pro has everything you need from a dashcam-except the looks. While the device is bulky, it looks acceptable on your windshield without the extra cameras connected. But as soon as you switch to 3-channel mode and hook up the additional cables, it seems a bit of a mess.
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