Sorry to be a downer guys, but....These radar detectors are a waste of money, Cops have little trcks to get around your radar/laser detector. by the time it goes off it's wayyy too late. Also the highway patrol doesn't need a radar gun to write you a ticket guys. if he feels your speeding he'll write you up for an estamated speed he was trained at the academy to measure by eyeball, so the judge will side with him.

save your $400 and buy something usefull.