H650e Mono | Headset | Wearing style Head-band | Office/Call center | Headset type monaural | Colour Black/Silver | Volume control Button | Cable length 2.1 m | Sound pressure level (max) 100 dB | Connectivity technology Wired | USB connectivity Yes | Ear coupling Supraaural | Headphone frequency 50 – 10000 Hz | Headphone sensitivity 90 dB | Weight 0.093 kg