Complete in car and two-way radio communications with headsets for four seats. Our 4 Link Pro Elite Intercom comes standard with great features like digitally controlled squelch, noise cancellation and automatically muting music when you speak into the microphones. Package Includes:4 Link Pro Elite DSP & Bluetooth Intercom with two 12 Foot and two 16 Foot Headset/Helmet F5021 Mobile Radio. 50 watt, VHF, Alphanumeric Display, 128 channels pre-programmed with our stock desert list. Antenna and Coax. 17 Foot Hole Mount Coax and No Ground Plane Antenna. Push to Talk Buttons. One Velcro and one panel mount. Headsets. Four High Quality, Carbon Fiber, Over the Head style Headsets with built in coil cord. Music/Phone Audio Input Cable allowing you to input music into your intercom or voice conversation from a phone or music device.DSP - Digital Signal Processing electronically removes all noise from the intercom system except your voice. This is a MUST have for loud vehicles without a windshield, headsets, V8 cars, or loud exhaust. Simple, one touch operation on the face of the intercom allows you to turn on DSP when you need it, and turn it off when you Do not. Bluetooth - Pair your Cell phone or Bluetooth capable music device player for wireless music and phone calls. Listen to your music without connecting any wires or have a cell phone conversation without ever connecting your phone to your intercom system. Great for hands free driving! Simple, one touch operation on the face of the intercom allows you to play or pause while music is playing, or answer incoming phone calls! Music/Phone Audio Input Cable allowing you to input music into your intercom or voice conversation from a phone or music device.