Koss Cobalt Bluetooth Wireless Stereophone

The Koss Cobalt Bluetooth Wireless Stereophone allows complete wireless freedom plus the Full Sound of Koss. The Cobalt uses frequency hopping technology for interface-free audio. 30-foot range allows you to move freely while taking a call or listening to your favorite music or movies. The Cobalt is also sold with a USB dongle transmitter, allowing you to plug into your computer. The Cobalt has an approximate battery life of 8 hours. It can be used with your computer, CD, DVD, or MP3 Player and with select mobile phones. Behind-the-head design provides maximum comfort and foam ear cushions allow for hear-through sound. Foam ear cushions allow for hear-through sound, and its dynamic element provides extended frequency response. The wider frequency response results in better overall sound performance for the Cobalt. For added convenience, push button volume controls on the ear cup allow for easy level adjustment. The Cobalt is also collapsible for protective storage and maximum portabili