General InformationThe AC-201 is a great headset for any listening/speaking activity on your computer. It utilizes dual 3.5mm audio and mic plugs compatible with most older PC computers.Technical InformationConnectivity Technology: WiredCable Length: 7 Sound Mode: StereoImpedance: 32 OhmMinimum Frequency Response: 20 HzMaximum Frequency Response: 20 kHzConnector Plating: Gold PlatedFeatures: ComfortableFeatures: Adjustable BoomFeatures: Voice RecognitionNoise Canceling: YesEarpieceEarpiece Design: Over-the-headEarpiece Type: BinauralDriver Size: 1.06 MicrophoneMicrophone Technology: Noise CancellingMicrophone Design: BoomMicrophone Sensitivity: 47 dBInterfaces/PortsHost Interface: Mini-phoneControls/IndicatorsEarpiece Controls: VolumeMicrophone Controls: MutePhysical CharacteristicsColor: SilverMaterial: LeatherForm Factor: Supra-auralWeight (Approximate): 8 ozMiscellaneousAdditional Information: Mic power voltage: 1.5v to 10vAdjustable boom arm180 degree microphoneAdjustable headbandWarrantyLimited Warranty: 1 Year