Edifier SPE-G1-BK Ergonomic lightweight,Noise Cancelling Microphone ,LED lights 2.5-meter Cable Features ÔÇó 40mm neodymium drivers deliver punchy bass and high-quality sound with exceptional clarity. ÔÇó Ergonomic lightweight design with soft leather earpads for all-day comfort. ÔÇó Plug and play headset with USB sound card and digital decoding technology provides high fidelity sound with rich details. ÔÇó High-sensitivity and noise cancelling microphone rotates 360 degrees for exceptional voice clarity. ÔÇó 4 color options with ÔÇ£breathing\' LED lights gives the headset a modern high-tech look. ÔÇó 2.5-meter cable with in-line volume control and microphone mute Specifications Frequency response 20Hz-20KHz Impedance 32? Sensitivity 100dB Driver unit ?ª40mm Cable length 2.5m