With the logitech H540 981-000480, plug into high-performance audio for PC calls, music and more. Simply insert the USB plug and instantaneously experience crisp, digital stereo and crystal-clear calls. With laser-tuned drivers and a built-in equaliser, this is precision sound that gets you to the heart of everything you listen to. And with the flexible, rotating, noise-reducing boom microphone, you’ll enjoy crystal-clear chatting. Which means that your family and friends will be able to hear your voice in its purest form-without distracting background noise. Plus, intuitive on-ear controls give you the ability to adjust the volume and easily toggle the microphone’s mute button on and off