Havit Gamenote HV-H2168d 40mm Ultra-large Caliber Speaker Gaming Headphone.
It has a Speaker of 40mm, Impedance 32±15%0
Sensitivity 105dB±3dB at 1KHz
Frequency Response 2011z to 20KHZ
Microphone
Operating Voltage 50±5%
Operating Current 440mA
Cord Length 2.5M±10CM
Plug: 35 mm + USB
Headset interface: USB (plug the USB connector, LED light is on, unplug, it off) + 3.5mm stereo
