Xtreme Noise Suppression(R) technology quiets even the most aggressive background noise ; Can be worn on the ear, over the head or behind the neck ; Wide-band audio helps the user understand every word ; A2DP ; Multipoint pairing allows use of 2 cellular phones or a phone & a Bluetooth(R)-enabled PC in tandem ; Over 7 hours of talk time per charge ; Lightweight & roadworthy;