At only 9 ounces, Garmin’s new GPS III Personal Navigator features plenty of waypoints; tracback navigation, which retraces your steps back to base camp; and a 12-parallel-channel receiver that maintains satellite lock even under a dense tree canopy. With a flip-flop display, the unit can be used vertically (in the palm of your hand) or horizontally (on the dash of your vehicle). But what makes the GPS III unique is its ease of use and its built-in base map, showing roads, highways, railroads, rivers, shorelines, and cities. You can zoom to within 120 feet of your position, or zoom out to 3,000. The unit always shows where you are on the map and scrolls seamlessly as you move. About $580 800-800-1020