Andrea Electronics ANC-700 Monaural Analog PC Headset with Microphone Active Noise Cancellation Microphone Technology  Pro-Flex Microphone Boom  High Quality Earphone with Large Comfortable Ear Cushion Microphone ON/MUTE Switch  Pre-Equalized CD Quality Sound  Stainless Steel Adjustable Headband  Extra Long 8 Foot Shielded Cord with Quick Disconnect  For Left or Right Side Use