I got the StreetFinder GPS model, a gizmo that could be attached to the slender back of my Palm handheld gadget. It is slightly sled-shaped, with its own actual battery pack, and also has a car adapter. It is fairly easy to navigate, even while on the damn road. But, this gizmo seems to have missed an important aspect when it comes to wireless communications: interference. This damn crappy excuse for a GPS device gives you nothing but static displays most of the day. Maybe its reception is affected with the light of day or something, you know. I think you should get some other GPS, for you'd be losing your way more with this shit than with a damn map!