The Koss CS200-USB communication headset headphones are perfect for at the office, language learning programs, or taking Internet conference calls.The Koss CS200-USB communication headset headphones full range of sound brings conversations to life. Featuring the unique Koss D-Profile earcup design, the CS200-USB fits the shape of the ear for the perfect fit.The flexible, hands-free electret noise-canceling boom microphone with detailed sensitivity and reduced sound distortion is perfect for multi-taskers.The Koss CS200-USB communication headset headphones connect to devices through a simple USB connection.