Provides hands-free calling. Allows for clear and natural conversations without echo or feedback. Hands-free calls without the need to install a headset. Built-in stereo headphone port for conversation Two high quality microphones Optimized for Lync 2013 and Lync 2010 USB cable connection and power supply, no need to carry extra cables or charge batteries. Built-in USB Cable User Guide Neoprene Carrying Case Included