A waterproof, handheld GPS receiver with core outdoor navigation features, expandable mapping and paperless geocaching. The eXplorist 310 comes pre-loaded with the World Edition map, which includes a complete road network in the U.S., Canada, Western Europe and Australia, and major roads throughout the world. Paperless geocaching for downloading more than 20 unique characteristics of each cache. Store up to 1,000 waypoints. Brilliant 2.2" color transflective screen. 18-hr. battery life using two AA batteries (included). Comes with standard mini USB cable and quick-start guide. Dimensions: 4.4"H x 2.2"W x 1.4"D. Weight: 5.2 oz.