Califone 3064-USB Multimedia Stereo Headset with Microphone, In-line volume and mute control, Mic on/off switch, USB 2.0 An ideal companion for todays digital classroom, this lightweight USB-equipped headset allows faster access to media files and streaming audio files. Enhanced speed makes it perfect for language learning, adult literacy groups, multimedia applications as well as general listening and call center uses. Fully adjustable and lightweight headband fits all students; Replaceable leatherette ear cushions; Permanently attached straight cord with reinforced connection resists accidental pull out High speed connectivity with backwards-compatible USB 2.0 plug eliminates the need for a sound card; Lengthy 8 foot cord for extended reach; Accessible in-line volume and mute control, mic on/off switch; Omnidirectional electret mic on flexible gooseneck; Recessed wiring resists prying fingers for classroom safety; Convenient plug and play format for Windows/Mac compatibility Warranty for school use - unlike headsets purchased from consumer electronics stores whose warranties would be voided if used in schools