Stereo pc headset usb headset design on ear transmission mode cable types of connection usb usb 20 type of cable single sided length of cable 18 m sound mode 20 hardware type of headphones headband features volume control in line control padded headband function mute headphone transmission range 20 20000 hz headphone impedance 32 ohm driver 40 mm microphone properties omni directional microphone microphone frequency range 30 20000 hz mic