VXI PE 100 Professional Grade Telephone Headset System with Amplifier Hands free telephone headset; universal phone compatibility if dial pad is on base, not handset Noise canceling mic greatly reduces background noise for professional sounding calls Flexible gooseneck style mic boom stays in the position you put it for consistent voice input Concave ear cushion for greater comfort, improved sound Express disconnect lets you keep telephone headset on when you leave your desk