Review on Universal Vehicle Smart HUD Display by Adam Nelson

Works well. Stupidly easy to install and configure. The cord is 7ft 10in long so you can easily drag it to where you want to put it. The block itself is small, which is nice, but the information is presented in large bright letters. Easily visible even in bright sunlight. Clear and colorful is actually better than pictures. Response to speed changes etc. Faster. I bought it to use as a compass. It shows 8 main compass directions: N NE, S, SW, etc. Doesn't show degrees, or if so, I didn't get it, that's not all. It's faster and more responsive to direction changes than my old $60 magnetic compass. No adjustments are required to compensate for your vehicle's magnetic mass. It works on satellites, not magnets. Just remember that the car needs to move in the direction of the display. I love it. Comes with a round self-adhesive backing for attachment. SATISFIED