LOGITECH H540 USB Headset Laser-tuned drivers, 2Yr Plug and play Listen to details Crystal-clear voice Headphone Take control of the sound, HeadphonesA high quality, high performance headset that brings your PC calls and music to life. As simple as plug and play With the plug and play USB connection, youll experience crisp, digital stereo and more true to life calls almost instantaneously. Listen to the details Laser tuned drivers and a built in equalizer minimize distortion, so you can get to the heart of all your music, movies and calling. Its the kind of precision audio that exemplifies the