The GPS 72 is a low-cost solution for land or marine navigation designed to provide precise GPS positioning using correction data obtained from the Wide Area Augmentation System (WAAS). This rugged, waterproof, unsinkable GPS receiver offers a large, 4-level grayscale screen and a dedicated GOTO button. It's designed as the next generation in basic, entry-level GARMIN GPS. The GPS 72 is preloaded with worldwide cities as well as marine navigation aids, including lights, buoys, sound signals and day beacons. If you're into boating, hunting or fishing, you can use the 72's built-in celestial data, which includes tide information, sunrise/sunset times and a hunting and fishing calendar.