HAVIT H2168d 3.5mm+ USB Gaming headphone
It has Speaker 40mm, Impedance 32±15%0, Sensitivity 105dB±3dB at 1KHz, Frequency Response 2011z to 20KHZ, Microphone ife5.0mm, Operating Voltage 50±5%, Operating Current 440mA, Cord Length 2.5M±10CM, Plug: 35 mm+LISB