Usb headset 51 headset design on ear type dynamic transmission mode cable type of connection usb 20 type of cable single sided length of cable 25 m sound modes 51 hardware surround headset type of headphones headband features intergrated sound card volume control padded headband adjustable headband function with vibration headphone transmission range 20 20000 hz sensitivity 105 dbmw headphone impedance 32 ohm microphone properties noise c