FeaturesWideband enabledNoise cancellation microphone boomAnti-static shock protectionSure-fit fully adjustable headbandLeft/right ear side compatible The Radius 2400 Binaural Noise Cancelling Headset - Experience superb build and sound quality with our Radius range of ‘Wideband Enabled’ Headsets. Built for use in various environments from heavy- use call centres to medium-use offices, there is a headset solution to meet every organisational requirement.Features:Single and dual earSupplied with Radius flat quick disconnect system(QD)Ratchet style microphone boom armMid-weight headset, ~ 62g / ~94gHeadset bag & hanging hook includedClothing clip includedCompatible with all known officephonesTECHNICAL DATAMicrophone:Impedance: 2.2kΩSensitivity: -36dB ± 2dB at 1kHzDirectivity: Noise CancellingFrequency Range: 200Hz~5000HzDistortion: Less than 3%Power Supply: 3V DCS/N Ratio: More than 58dBSpeaker:Impedance: 150ΩSensitivity: 92 ± 3dB at 1kHz 60mVInputMax Input Power: 100mVFrequency Range: 300Hz~5000HzDistortion: Less 3% at 1kHz60mV