The Aliph Jawbone Prime Black Bluetooth Handsfree Headset w/ Noise Assasin 2.0 is a sylish, high-tech Bluetooth headset with unique undulating texture and excellent background noise elimination. Features the latest in NoiseAssassin technology that delivers improved noise elimination performance and an integrated digital approach to wind reduction. Also features multipoint support for simultaneous connection to two audio sources, including a PC. Up to 4.5 hours of talk time, up to 216 hours (9 days) of standby time.