From crisp, clear PC Calling/calls and video conferencing to music, games, voice recognition, and more, the Plantronics .Audio™ 70 is your answer. It's the perfect choice for free PC Calling/calls with Yahoo! Messenger with Voice. This behind-the-head stereo PC headset gives you incredible stereo sound - thanks in part to features like a handy inline volume/mute controls, a QuickAdjust™ microphone boom, and a superior microphone for improved voice recognition accuracy. The .Audio 70 PC headset is flexible, lightweight, with soft, swivel-mounted ear cushions that let you work or play in comfort. It's also works with popular sound cards, so simply plug it into your PC and start talking.