The Rino 110 Portable Navigator is a GPS-enabled handheld that integrates radio functionality to provide two-way communications. It's waterproof, can send communications up to two miles using FRS channels, 5 miles using GMRS channels, and can beam your exact location to another Rino user using position reporting. And because the Rino 110 Portable Navigator has standard FRS/GMRS capabilities, you can talk to friends or family who own conventional FRS/GMRS radios. It has 1 MB of internal memory for additional points-of-interest data that can be downloaded from a MapSource points of interest CD-ROM.