A:
It is a corded detector only. Does not use batteries. The detector comes with a well-designed, and adjustable, windshield mount. Once you slip the detector onto the mount (after attaching the mount to the windshield), you'll likely need to bend the metal part of the mount up a bit so that the detector is parallel to the ground. Don't be afraid to bend the metal. It won't break on you, unless you bend it back and forth all the time. I would recommend buying an extra mount if you plan to use it in more than one vehicle.