Summary: The size isn't great (its huge), but it is the only GPS we could find that didn't need a special rear camera versus the one that was already installed in our Truck. Had to get used to the different type of settings since it is made for a large rig!
Summary: First one arrived and would not charge, so I could not update it. After paying to send unit back, when I tried to plug in the backup camera, would not work correctly(the main reason I bought this model). Gave up on using it as part of backup system. The GPS part works great.
Summary: Be VERY careful if you are even thinking of buying this product. Bought this one in February 2014 and the CPU went out in September. No one, and I mean no one wanted to even discuss a refund let along getting it fixed. Terrible customer service and the product is even worse. Bought a new GARMIN truck GPS and love it.