Nady MRC-11X 22-Channel Bike-to-Bike Radio Communicator with Helmet Headset • 22 GMRS/FRS channel availability; 38 privacy codes • 2-mile range • Built-in full duplex passenger/driver intercom and simplex radio communication • Noise canceling in-helmet headset with PTT or VOX operation • Auxiliary stereo input and 2 headphone jacks • Integrated weatherproof handlebar-mounted PTT button • Monitor, scan and auto-squelch features • Uses 3 AA batteries (not included) • Includes special helmet mount headset with noise canceling/wind blocking mic