Actually, calling this a toy takes a little bit of the dignity away from something that is truly powerful and useful with it. I use my newly-acquired III+ so as not to get lost. It picks up the reception just  fine through the windshield of my car while the machine is on my dash. I'm  pretty impressed with the battery life too; much better than I had  originally thought. The tracking is spot-on. My only complaint (a tiny one)  is the fact that the machine appears to take a long time getting started  once you turn it on before heading out. Obviously, it's trying to acquire  as many satellites as possible, but sometimes (eg. while driving out of my  building's garage) it just gives up after a few minutes and throws you a  map of the USA, asking for a verification of where you are. So then you  have to respond (press Enter a couple of times) which isn't too great when  you're trying to maneuver out onto the street with oncoming traffic. But  anyhow, this doesn't always happen. Very flexible little gizmo, weighs  almost nothing (about a pound).