H570E Mono | Headset | Wearing style Head-band | Office/Call center | Headset type Monaural | Colour Black | Volume control Button | Cable length 1.9 m | Sound pressure level (max) 79 dB | Connectivity technology Wired | USB connectivity Yes | Ear coupling Supraaural | Headphone frequency 31.5 - 20000 Hz | Headphone sensitivity 94 dB