this be a good gp so far as the basic functionality go but it take a hit when it come to Satellite fix , speed of calculation etc. . pro - \* large screen , easy to read even on a sunny day . \* loud voice prompt . con - \* Slow calculation \* take long tim to get a Satellite fix if it be last use a couple of mile away from you current position . \* map datum be a little out date and free update be not available . \* no battery . Garmin c330 be a similar product in the same price range . I think that be a lot better in almost every area .