Intercom driver to passenger 30 ft range Talk 2 All universal intercom FM radio with Stereo audio and RDS (Radio Data System)Connect your phone to receive or place phone calls and listen to music Connect your GPS for turn by turn directions Connection for GMRS radios with internal or external Bluetooth AUX wired connection for MP3 players and GMRS radios Setup and Firmware updates via USB connection to a PC Voice Activation Waterproof Dimensions - 3.6'' * 1.9'' * 0.9''