Comfortable design
Noise-cancelling microphone
Rotating microphone
In-line audio controls
Pure digital USB
8 feet cable
Logitech H390 ClearChat Comfort USB Headset has 20 Hz–20 kHz headset frequency response, 100 Hz–10 kHz microphone response, padded headband and ear pads, convenient inline volume and mute controls, -62 dBV / µbar / -42 dBV / Pa +/- 3 dB input sensitivity, 8 feet cable length, USB compatible connections (1.1 and 2.0), logitech ClearChat comfort USB, quick-start guide.