Having bought a car with inbuilt satnav, I missed having the camera warnings that my 'TomTom' used to provide. The Inforad has proved a useful and (comparatively) low cost solution. I found the setup fairly easy, although for some reason it wouldn't work on the first 2 USB ports I tried. Problems? . . .well, to start with, I ordered a K2 with the volume control switch. I got a K1 in K2 packaging - not good. Occasional false 'over the speed limit' alarms (maybe due to out of date speed limit information, especially on motorways) which seem to go on for ages - needs a mute button. Battery life seems to be about 5 hours; recharging is fairly speedy with the supplied in-car charger, faster from the mains (mains charger NOT supplied). Overall, does what I wanted.