Introductory GPS units don't get any better than the Garmin eTrex 20. This small handheld GPS unit builds on the incredibly successful eTrex line of GPS models by improving the interface and ergonomics, as well as adding paperless geocaching and expanded mapping abilities. It's still waterproof and ruggedly built, but it's also easier to use than ever. The 65k color display is a full 2.2 inches and is easily viewable in all lighting conditions. Garmin offers a wide variety of mounting options for the eTrex 20 including bikes, boats, cars or on your motorcycle or ATV. You can even use City Navigator for turn-by-turn directions on your next road trip. You also get a high-sensitivity, WAAS-enabled GPS receiver and HotFix® satellite prediction for great coverage in the woods and in the city. Garmin also made the eTrex series compatible with the expanding GLONASS satellite network, so you experience the best possible satellite reception, all over the world. You can build on the eTrex 20's features by adding topographic maps, water charts or city navigator data. The unit accepts microSD™ cards and has 1.7GB of internal storage for map and data storage. Geocachers will love the paperless geocaching feature that stores all of the data you need to have a successful geocaching experience. Simply download the caches you want and the eTrex 20 displays all of the valuable description, hint and location data that you need to identify the cache location.