UClear HBC130 Bike Helmet Communicator Boomless microphone produces crisp, accurate sound in extreme wind and noise environments. Listen to music, make mobile phone calls or intercom with another UCLEAR headset. Patented noise reduction system isolates your voice and eliminates all background noise. Powerful Hi-Fidelity Speakers (20-20.000 Hz) Rider-to-Rider Intercom (requires second HB100) communications up to 10 meters (Long distance group communication requires WT300wPTT accessory)