Stay focused with the Jabra Evolve 40 UC Stereo USB Business Headset This headband-style headset features a noise-canceling microphone, so you can be better heard at the other end. When not in use, the microphone boom arm can be easily stowed by integrating it into the headband. A busy light on both the headset and control unit alerts others that you do not wish to be disturbed. For easy operation, the headset comes with a control unit that provides access to commonly used functions like volume and mute, as well as the ability to end and answer calls. This control unit connects to your EVOLVE 40 via a 3.5mm headphone jack, so you can plug your headset into smartphones, tablets, and more. The EVOLVE 40 UC Stereo Headset is optimized for Unified Communication systems, providing instant "Plug & Play" installation for your headset. The headset is compatible with most vendors of Unified Communication systems. It connects to your system via the USB cable on the control unit and uses digital signal processing (DSP) to digitally optimize the user's voice and suppress echoes. It comes with leatherette ear cushions and a soft pouch. The EVOLVE 40 can be used for music as well as voice.