This Headset Specifically designed for secure communications, this headset includes a plug-and-play encrypted USB dongle that effectively reduces pairing interference. Wireless Headset for UC with Dongle equipped with an ENC noise-canceling microphone and stereo audio output, the Wireless Headset for UC with Dongle is ideal for roles and distributed work environments where audio transmission security is critical—such as in government institutions and enterprise conferencing systems.
link:http://www.ucheadset.com