Turning off the mic is a few clicks on the menu setting, as are all other options. I never want to install again, so definitely not good for moving from car to car. It's not difficult, as it's just a matter of running the wires and tucking them into the headliner. This camera has a feature where when you go into reverse, it switches to the rest camera only, and overlays those green/yellow/red lines on the screen to aid parking. The parking lines do not move like in some vehicles with a factory back -up cam. In order for the camera to know when you're in reverse, you must connect the provided lead to the power wire of the reverse bulb.
I had to take off a few panels in order to hide the rear cam wire, in addition to removing the rear taillight, cutting the power wire, and splicing it back together with the lead. The front wire was about 6 inches too short to simply tuck into the liner and around the dash, so that required me to use a piece a weed whacker line to fish the wire behind the dash, as I couldn't find my real fish tape.
Install took probably two hours as I wanted it to look nice and as inconspicuous as possible. All that said, a simple forward facing camera with a suction cup mount would be as easy to move as a windshield mounted GPS, as long a you didn't care about hiding the wire. Rear camera is held on with 3M tape so it can be mounted where ever you like. Once mounted, it rotates so it can be adjusted, even to see the interior of you wanted. Rear camera options to mirror, flip, or both (in case you mounted it upside down on accident) are only a few menu clicks away.