Past Navman GPS systems include the S30, S100, and the F50, but the latest one is the Navman F15. Unlike the other models, this one is rather cheap and only costs $100 at Radio Shack.

The In-Car GPS System is easy to mount thanks to a stong adhesive strip, or alternatively you can use the included mount to place it on your windshield. In terms of technical specifications, the F15 has a 3.5-inch touchscreen, and comes with software that is easy to use, like most other navigation systems. Extra features include lots of POIs - Points of Interest - like gas stations, hotels, restaurants, and more. As it always happens, it comes pre-loaded with the latest maps of the US, and even Puerto Rico.