Mine started "Bonging" like fury at one point yesterday and something was flashing on the screen. Since I can't drive too well without specs on but cannot read without taking them off I pulled my glasses down my nose to peer over the top of them at the device. This caused me to slow right down and bugger me! It was warning me of a speed camera. As I rounded the bend there the sods were, parked at the side of the road in their little van with the cut out hatch in the back door. I paid £55 for it so reckon, saving me a £60 fine and three points, it has more than earned its keep in the first day of use. You could say I am in profit