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HeadphoneDriver:Dynamic, 40mm with neodymium magnetsType:Circumaural, Closed backFrequency response:20Hz–20,000HzImpedance:16 ΩSound pressure level:99dBSPL/mW at 1kHzT.H.D.:< 2%Weight:215gCable length and type:Headset (1.3m)Connection:Headset - 3.5mm plug (4 pole)MicrophoneElement:Electret condenser microphonePolar pattern:Noise-cancellingFrequency..