Sold as 1 Each. Built-in sound chip, allowing direct plug-n-play with a simple USB Connection. Features 6 ft cable. Built-in noise reduction ear cups form a snug acoustic seal for an extra level of quiet. Adjustable microphone is omni-directional, and 270 degrees adjustable. With the conveniently located media control, you can easily adjust the volume and manage your calls with the touch of a button.