E-Bro Two Way Radio, Intercom System for Motorcycle, ATV, Motorbike, Helmet to Helmet Intercom With Cable 2 Way Radio MP3 Music Input Helmet to Helmet Intercom System Allows simultaneous two-way and hands-free communication between rider and passanger Great sound quality delivered without delay or interference Can be connected with other audio devices It offers an input jack to connect your MP3 / CD player directly into the intercom allowing both the Rider and passenger to enjoy music.