This was my first ever radar detector. I hadn't bothered to do any research on people that had owned more than one type or one company of radar detector. Its really too bad. If you've never had a radar detector before, you may think this does the job. You may think, and agree with Cobra's manual that it does it with "minimal falses". But I assure you, I promise you, it doesn't. I had this detector for a bit, and I realized I had more falses than I actually had alerts, and the alert range would always have to be constant on, which police officers never use. Sure, it gave me a save, but it annoyed me more than it was ever useful. Its seriously more useful as a paperweight than as a radar detector. It isn't even worth 50 bucks, and if you see this on sale for 50 bucks, by nooo no means should you ever buy it. Invest that 50 bucks and buy a better radar detector than this. Try doing a little research on the ones that are a bit more expensive, or at least one from an honest company like Whistler.