The Rino 110 has a built-in city point data base, with 1 MB of internal memory for additional points-of-interest data that can be downloaded from a MapSource® Points of Interest CD-ROM. WAAS-enabled GPS receiver 22 communication channels: 1-14 FRS, 15-22 GMRS 38 sub-audible squelch codes per transmission channel for semi-private radio communications Transmit distance: up to 2 miles using FRS, up to 5 miles with GMRS External voice activation (VOX) Ergonomic design for one-handed operation, with Call, Press-To-Talk (PTT), and Page mode buttons on the side, Power/Backlighting button on top, and Volume and Zoom buttons in front Unique 5-way cursor for channel selection and volume adjustment in FRS/GMRS mode, and quick map panning, entering, and selecting functions in GPS mode Built-in worldwide city point database, with 1 MB of internal memory for downloading additional points-of-interest data from a MapSource Points of Interest CD.