Black Office/Call center Head-band Headset Wired 3.5 mm connector USB connectivity Supraaural 150 - 7000 Hz 3293.6 dB Microphone type: Boom One mono replacement headset for Jabra Evolve 30 II. The headset includes headband, ear cushion and 3.5mm jack. Performance Certification CE, FCC, KCC, RCM Country of origin China Plug and Play Yes Cable length 0.95 m Product colour Black Headset type Binaural Recommended usage Office/Call center Wearing style Head-band Product type Headset Ports & interfaces Bluetooth No USB connectivity Yes 3.5 mm connector Yes Connectivity technology Wired Headphones Driver unit 2.8 cm Headphone sensitivity 93.6 dB Impedance 32Headphone frequency 150 - 7000 Hz Ear coupling Supraaural Microphone Microphone noise-canceling Yes Microphone frequency 100 - 10000 Hz Microphone type Boom Operational conditions Storage temperature (T-T) -30 - 80 °C Operating temperature (T-T) -10 - 50 °C Weight & dimensions Weight 142.5 g Packaging data Package weight 140 g Packag