Features - Noise canceling clarity - thanks to the noise canceling microphone, your voice is easily understood without you having to shout - USB plug & play - simply plug into your PC or Mac USB port and start phoning over the net - Stereo sound - Sennheiser quality that’s perfect for a range of applications such as music and gaming - Light and comfortable - with the lightweight headband, it’s easy to forget you are even wearing a headset - Easy volume control - the in-line volume/mute control lets you make quick adjustments without fiddling with your computer settings Technical Data - Wearing style: Headband - Color: black - Connector: USB - Cable length: 2 m - Weight: 84 g HEADPHONES - Impedance: 32 Ohm - Frequency response (Headphones): 42 - 17000 Hz - Sound pressure level (SPL): 95 dB - Ear coupling: on-the-ear, open design - Transducer principle (headphones): dynamic, closed MICROPHONE - Impedance: 2 kohm - Frequency response (Microphone): 90 - 15000 Hz - Pick-up pattern: Uni-direktional - Sensitivity as per 121 TR 9-5: - 40 dBV