Califone 3066USB-10 Classroom Ten Pack Deluxe Stereo Headsets An ideal companion for today's digital classrooms or libraries, this classroom pack of ten rugged USB-equipped headsets allows faster access to streaming multimedia and audio files. Its foam-lined storage case safely holds the headsets when they're not in use. Our most rugged headset, the 3066 USB is designed for language learning in today’s classrooms. This compact, adjustable headset is ideal for high speed internet listening, language learning and tutorials in computer labs and other multimedia applications as well as a web phone.USB plug eliminates need for a sound card, Windows/Mac compatible