Hi Charlie Yes I had one Ive still got it some where it was quite a few years ago now when they came out ?? It was really good and saved my bacon lots of times because it always warned me in time for me to slow down in time ....its out of date now i suppose the new ones are evern better they are well worth the money... I dont need one now as I tend to keep with in the lawful speed I am retired and in no hurry and I don't go far . Frank