H330 USB Headset delivers clear digitally enhanced audio for Internet calls, music and movies. USB connectivity for Mac or PC gives you a clear digital connection with plug-and-play simplicity. Noise-canceling microphone blocks background noise. Rotating, adjustable boom allows you to precisely position the microphone, or rotate it out of the way when you're listening to music or watching a movie. Adjust the lightweight headband for just the right fit. Headset also offers plush ear pads, in-line volume controls, mute controls and rotating microphone boom.