This behind the head style headset provides tough, reliable, two-way radio communication and can be used in applications including auto racing, industrial & heavy equipment operation, recreational off-roading and much more! Features a dynamic noise cancellation microphone for clear transmissions and Clear Hear speakers for unsurpassed audio performance. Rugged Radios headsets are built to perform in extreme noise environments - combining the latest technology with firm, yet comfortable fit for optimum communication. These radios are to be used with a two-way radio for communication. They are not capable of connecting directly to each other via a cable for communication. The included cable is compatible with Motorola 2-Pin style connectors on two way radios. Please see below for an expanded list of compatible two way radios. Works with the following radios: Motorola CP100, CP150, CP200, CT150, CT250, CT450, CT450LS, GP2000, GP300, GP308, GP68, GP88,GTI, GTX, LTS2000, PR400, P040, P080, P110, P1225, P1225LS, P200,PRO3150, SP10, SP21, SP50, XTN446, XTN500, XTN600, XV1100, XV2100, XU1100, XU2100, XU2600 HYT TC500, TC508, TC600, TC610, TC700 Speedcom MT/ST Black Box & Black Box+