Unlike the other two GSP devices in our Top Picks, this one is an outdoor GPS devices and this high-end model features a touch screen. Oregon 400t is the best off the road GPS available;, its tough, 3-inch diagonal, sunlight-readable, color, touchscreen display is the highest of the high end with regard to these kinds of devices. Its easy-to-use interface means you'll spend more time enjoying the outdoors and less time searching for information. The Garmin Oregon 400t is rugged built for hard impacts and can be submerged in water up to a depth of a meter for half an hour without damage. It features wireless communication and the 400t is preloaded with topographic maps, perfect for hiking and biking. It also can be upgraded with additional maps, including the City Navigator, which adds street-level, turn-by-turn automotive navigation for the U.S., Canada, and Puerto Rico along with a six-million-entry points-of-interest (POI) database. With Oregon 400t you can share your waypoints, tracks, routes and geocaches wirelessly with other Oregon and Colorado users. Now you can send your favorite hike to your friend to enjoy or the location of a cache to find. Sharing data is easy. Just touch "send" to transfer your information to similar units. Oregon 400t supports Geocaching.com GPX files for downloading geocaches and details straight to your unit. No more manually entering coordinates and paper print outs! Simply upload the GPX file to your unit and start hunting for caches. Show off the photos of your trip instantly. Though Garmin does not reveal which GPS chipset is used in the device, the receiver highly sensitive, and satellite acquisition time is rapid. With its high-sensitivity, WAAS-enabled GPS receiver and HotFix satellite prediction, Oregon 400t locates your position quickly and precisely and maintains its GPS location even in heavy cover and deep canyons. The advantage is clear - whether you're in deep woods or just near tall buildings and trees, you can count on Oregon to help you find your way when you need it the most. Both durable and waterproof, Oregon 400t is built to withstand the elements. Bumps, dust, dirt, humidity and water are no match for this rugged navigator. The Oregon GPS is easy to use and maintain, powered by two AA batteries . A latch releases the back panel to expose the battery and memory slot compartment. Insert a microSD card and some batteries and this highly mobile GPS is ready to go anywhere