Ideal for Voice-over-IP applications such as Internet voice chat or video conferencing, and multi-player online gaming. Convenient volume control with microphone mute switch. Ergonomic and light-weight neckband with soft foam cushion ear-pads provide stability and comfort during extensive use. Adjustable microphone arm for your convenience Wired On-the-ear Headset Supra-aural Closed Headset Behind-the-neck Design Built-in Microphone 30 mm Headset Driver Units 20 Hz - 20000 Hz Headset Frequency Response 300 Hz - 20000 Hz Microphone Frequency Response