The ActiveBlu headset provides high quality bluetooth wireless audio transmissions from the cyclist's bluetooth enabled cell phone to their bicycle helmet. It easily attaches to any bicycle helmet and allows the rider to quickly and safely answer or place calls without having to slow down or stop riding. The unique engineering of the microphone and ear piece delivers remarkable sound even at riding speeds of up to 40 MPH, while allowing both hands to remain on the bike for maximum safety. Works great for all active sports like cycling, skiing, snowmobiling, etc.