The Plantronics®'s .Audio™ 645 USB headset combines rich stereo sound with digitally enhanced voice quality for Skype®, Windows Live™, or Yahoo® Messenger Internet calling. Position the boom to talk, or rotate it out of the way when listening to music, Podcasts, or DVDs. A noise-cancelling microphone reduces background noise so callers only hear you. A choice of connectivity - analogue or USB - makes it easy to plug and play, while the lightweight, behind-the-head headband lets you comfortably use the headset for hours. Adjust music and microphone volume, or mute the microphone, with just a touch while you enjoy consistent, high-quality audio.

• Lightweight and flexible, the headband is worn comfortably behind your head.
• Watch a video or listen to music and Podcasts in full-range stereo.
• Rotate the boom to talk, or stow it out of the way when listening to music, Podcasts, or DVDs.
• A noise-cancelling microphone reduces background noise.
• Convenient in-line controls let you adjust music and microphone volume, or mute the microphone, with just a touch.
• Flexibility to connect using an analogue connection or with the USB sound card. Digitally enhanced sound helps ensure consistent sound quality.