Logitech H540 High-Performance USB Headset For Windows & Mac , Skype Certified: With High-Definition sound and on-ear controlsPREMIUM AUDIO FOR CALLS AND MUSICLaser-tuned drivers and built-in equalizer for precision audio. USB 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