PCI Race Radios 4 Link Pro Elite Intercom 4 Drive connectivity to the next level with the PCI Race Radios 4 Link Pro Elite Intercom. With this universal kit, existing helmets and headsets can easily become a part of in-car communications. Versatile in design, the kit can be installed in various locations using PCI Race Radios mounting solutions. Features: 4 Link Pro Elite Intercom Two 12ft Headset/Helmet Cables with quick disconnect nexus mil spec connections (for front) Two 16ftHeadset/Helmet Cables with quick disconnect nexus mil spec connections (for rear) Available with Bluetooth and/or DSP Music/Phone Audio Input Cable Included on standard and DSP models (sold separately for Bluetooth models) 6' cable allowing you to input music into your intercom or voice conversation from a phone or music device The 4 Link Pro Elite Intercom plays music into your helmets or headsets, then when you speak into the microphone or receive an incoming radio transmission, music automatically lowers to 20 volume DSP - Digital Signal Processing electronically removes all noise from the intercom system except your voice 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 don't 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 One touch operation on the face of the intercom allows you to play or pause while music is playing or answer incoming phone calls