KILL BACKGROUND NOISE

ICON HD™ Jawbone Bluetooth is equipped with military-grade NoiseAssassin® 2.5 with wind reduction, the world's most advanced noise cancellation technology. Originally developed for use by tank commanders and helicopter pilots, NoiseAssassin is a proprietary technology that eliminates unwanted background noise when you talk on the phone. It gives you the freedom to enjoy quiet phone conversations wherever you are. Whether you're at a noisy airport or on the road, your speech will sound crystal clear.

All credits and information was found on jawbone.com