Califone’s high-quality 4100 USB Headset Lab Pack is compatible with both USB 1.0 and USB 2.0 computers and come with a 10-foot long cord so you can easily reach reference materials while working. Each set of affordable headphones has a unidirectional microphone that is ideal for language learning and situations requiring isolated vocal feedback. Includes an in-line mute/volume control and can even be used for Internet telephone calls (VoIP). This lab pack comes with 10 headphones and one hard plastic carrying case.
Please note: Ear cushions cannot be removed.