PREMIUM AUDIO FOR CALLS AND MUSIC Laser-tuned drivers and built-in equalizer for precision audio. USB-A plug-and-play connectivity lets you instantly enjoy music, movies, and calls in rich, digital stereo sound. On-ear controls and mute indicator light make it easy to see when the mic is muted. Laser-tuned drivers and built-in equalizer provide rich, digital audio for full immersion in music, games and calls. This plug-and-play headset can be used with any PC or Mac computer with a USB-A port or adapter without the need to install software. Details Logitech USB Headset H540. Plug into high-performance audio for PC calls, music, and more. Simply insert the USB and instantaneously experience crisp, digital stereo and crystal-clear calls. With the plug-and-play USB connection, you’ll experience crisp, digital stereo and more true-to-life calls almost instantaneously. Laser-tuned drivers and a built-in equalizer minimize distortion, so you can get to the heart of all your music, movies and calling. It’s the kind of precision audio that exemplifies the difference between merely hearing and truly wanting to listen. Breathe new life into your chatting. The adjustable microphone reduces background noises, so your friends, family and business associates can hear more of what they want—your crystal clear voice. Use the on-ear controls for simple volume adjusting and instant mic muting. Plus, you’ll never talk with the mute on again, thanks to the easy-to-see mute indicator light. Soft leatherette padding is easy on your ears—especially when you’re listening to music or chatting for hours. Worried about the fit? Don’t be. The padding on the headband ensures a fit that molds comfortably to the contours of your head. Works with common calling applications including Skype, Google Hangouts, Yahoo! Messenger, and other calling services.