has way less features than a regular Garmin Chartplotter. I have the 5212 on my boat now. The actual charts look just like the "real" Garmin chartplotters. Tom, when I said it stopped, twice it stopped updating my current postion. One other time the screen went blank and it said I had to reload my purchase, which is kind of tough out in the middle of the Gulf. I tried rebooting which did nothing. Eventually it came back online all by itself.