Logitech ClearChat Pro USB Headset Logitech ClearChat Pro USB Headset General Features: Black gray color USB compatible (1.1 and 2.0) Cable Length: 8-foot Frequency response: Headset: 20 Hz 20 kHz Microphone: 100 Hz 10 kHz Input sensitivity: -62 dBV/ bar, -42 dBV/Pa +/- 3 dB Laser tuned audio drivers SoundSwitch equalizer Noise Cancelling Microphone Flexible Boom Mute indicator