I've had my Blinder 20-xTreme for the last year, and I can definately say it works, i know because this one time i was being targetted, my blinder goes off and i'm looking around and finally i see the state trooper on the side aiming laser at me, i didn't turn it off amidst the confusion of things, so i left it on, as i went by him his face was turning red, and then as i passed by him he pointed the gun at me from behind, in other words he was targetting the back of my car, so he must not have gotten a reading, anyways my question is i just saw a video posted on here where the blinder punched through at 1200 feet or so, is this only with a certain gun? were the transponders too low in those cases, or if that was a real life situation would that be adequate time to break before the speed was revealed to the lidar gun ? also why is it easier to target if your head lights are on? i thought even more light would confuse the lidar unit even further with the blinder on ? thanks for your responses in advanced . i love the blinder.