Stereo pc headset design in ear transmission mode cable type of connection 2x 35mm jack type of cable double sided length of cable 23 m sound mode 20 hardware type of headphones in ear features passive noise cancellation active noise cancellation headphone transmission range 20 20000 hz headphone impedance 16 ohm driver 9 mm microphone properties noise cancelling microphone microphone frequency range 30 16000 hz included in delivery user manu