Its works just okay/ I took it to Hawaii on a trip and it lost signal about 75% of the time. And worse than that when it was working it took us to the wrong place. I took it again on a trip to Flordia and it couldn't even find Disney world Or it would take me about two blocks from where I was supposed to be and lose signal. At home in Arizona after the trip the clock never worked corectly again. It does do better here in az, but again sometimes it will take you to the wrong place. If I had to do it again I would buy a better quality one and spend more money.