Nolan N-Com Basic Kit 2 The Basic kit is mono compared to the Basic Kit 2, which is stereo. For basic N-COM communication and audio, each helmet must be equipped with a Basic Kit and an N-Com E-box. Includes earphones, a microphone, and two short wires (that hang from the underside of the helmet, and allow you to plug in various devices). The speakers and microphone are powered by the battery in either a E-Box Intercom 2 Kit or a E-box Bluetooth 2 Kit. The Basic Kit along with an N-COM E-box will permit you to listen to your music player, radar detector, GPS unit, etc., and talk on your cell phone, but you must control volume on the source device and answer the phone by pressing the controls on the phone. For connecting to external audio and communications devices, a Multimedia Wire and/or Cell Phone Wire is needed in addition to the E-Box kit. Installs in minutes without any tools or modifications. Please note Requires Nolan N-COM E-Box Read more in our Nolan N-COM Communication System Buyers Guide