The Rino 120 delivers the best in two-way radio communications and GPS navigation in one tough unit. It has all the features of the 110 plus a voice scrambler and vibration mode for silent calls. Built in basemap consisting of American road and highway detail, along with 8 MB of internal memory for additional road, lake, marine, and points-of-interest data that can be downloaded from MapSource. Comes with a PC interface cable. Waterproof.