It is junk now, connector broke inside the body. But it was a 7 inch intended for RVs. Examples of routing problems: enroute to Branson, it directed us off the main highway and led us down narrow winding country roads. Having never been in that area, we did not realize what it was doing to us. Since then I have used Google maps to confirm a route. The other time we were headed to the Pacific coast in Oregon and the GPS kept telling me to U-turn or change route. I had previously verified the route was big truck passable, so kept going. We went thru a tunnel and the GPS went bananas telling me I had exceeded a weight limit on a bridge.
We now use a 10" Samsung tablet with GPS chip and an app called Here WeGo. The tablet allows us to split screen, so we run a 2nd GPS Google Maps. Google maps appear to work well in larger towns, but out in the country, Here WeGo has fewer problems.