The Logitech ClearChat Comfort USB Headset is a stereo headset designed for use with a computer. The headset features stereo headphones and an integrated microphone. It connects to your computer via the standard USB interface. The headset is an excellent choice for anyone who wishes to participate in online computer games, web conferencing, or VoIP communications. Includes: Logitech Quick-Start Guide - Logitech 2 Years Limited Hardware Warranty Features: Adjustable, padded headband and plush ear pads ensure a comfortable fit Noise-canceling microphone reduces background noise for clear conversation and voice commands. Microphone rotates out of the way when you're listening to music or watching a movie In-line volume and mute controls instantly adjust headset volume or mute the microphone Advanced digital USB: Experience superior sound clarity with the simplicity of a single USB plug-and-play connection Specifications: Frequency response: Headset: 20 Hz-20 kHz Microphone: 100 Hz-10 kHz Input sensitivity: -62 dBV/ 0.5bar, -42 dBV/Pa +/- 3 dB Cable length: 8' Connections: USB compatible (1.1 and 2.0) System Requirements PC: Windows 2000, Windows XP, Windows Vista, USB port System Requirements Mac: Mac OS X (10.2.8 or later), USB port Warranty: Logitech 2 years limited warranty