Garmin Rino 530HCx 2-Way Radio with GPS/FRS/GMRS High-Sensitivity, WAAS-Enabled GPS Receiver Electronic Compass Displays Accurate Heading While Standing Still Barometric Sensor With Automatic Pressure Trend Recording Features Built-In Quad Helix Receiving Antenna & Basemap With Automatic Routing Capabilities 5W Of Transmit Power Using Gmrs Frequency Up To 14-Mile Range