Enjoy rich, dynamic sound and hands-free talking at your computer with the Koss SB40 20Hz Stereophone Padded Headband with Microphone. Use them to privately enjoy music, videos, movies and games without disturbing anyone else in the home. These Koss headphones have a closed-ear design and block sounds from within the earcups and without, maximizing privacy and intelligibility. They have a boom microphone that offers a pickup pattern that rejects off-axis sound, so the parties on the receiving end of your calls will hear your voice and little else from your mic. These closed ear headphones come with an adjustable cloth sling and headband that provide comfort during extended periods of use.