Headband headset transmission mode cable sound mode mono types of headphones headband earhook type of connection 25mm jack features adjustable headband volume control type of cable single sided material plastic weight 12 g headphone transmission range 20 20000 hz microphone frequency range 20 20000 hz sensitivity 126 dbmw microphone sensitivity 47 dbmw headphone impedance 150 ohm microphone impedance 2 200 ohm type of fitting on ear