Sennheiser HME 280-DW800 Intercom Headphones Headset HMD 280 Pro P/N 502179 New Open Box Unused. Headphones Only as Pictured No Additional Cable -Please see images for actual Item Shipping Thanks For LookingAny Questions Please Ask Manufacturers Product Code: 502179 Noise Cancelling Microphone With Extremely Low Handling NoiseMicrophone Can be Worn Either on Left Hand Side or Right Hand Side - Depending on Users RequirementsEasily Replaceable Single Sided Coiled CableLightweight DesignSpace Saving Design with Rotating EarpiecesPC and Desk Phone Compatible - **Needs Correct Bottom Lead** Sennheiser HME 280-DW800 Intercom HeadsetThe HME 280 Headsets have been designed especially for communications in high-noise environments. The Noise Cancelling Microphone has been optimised for close talking distances. As well as having an adjustable Boom Arm, which can be worn at either side - suiting the wearers requirements, the Noise Cancelling Microphone blocks out unwanted background noise ensuring better call quality and less call time,Two Large Leather Ear Cups ensure both parties can be heard clearly.FeaturesNoise Cancelling Microphone With Extremely Low Handling NoiseMicrophone Can be Worn Either on Left Hand Side or Right Hand Side - Depending on Users RequirementsEasily Replaceable Single Sided Coiled CableLightweight DesignSpace Saving Design with Rotating EarpiecesPC and Desk Phone Compatible - **Needs Correct Bottom Lead**Technical Data:HeadphonesTransducer Principle - DynamicEar Coupling - Circumaural, ClosedFrequency Response - 8 - 25,000 Hz (-10dB / 1kHz)Sound Pressure Level - 102dB (As per IEC 268-7)Attenuation - Max 32 dBLoad Rating - 0.5 WTHD - < 0.1%Weight Without Cable - 310gMicrophoneTransducer Principle - DynamicFrequency Response - 50 - 13,500 HzPick Up Pattern - Super-CardiodSensitivity (Free Field, No Load, 1 kHz) - 1 mV/Pa