Plantronics blackwire c520
Usb headset stereo pc headset design on ear type dynamic transmission mode cable types of connection usb usb 20 type of cable single sided sound mode 20 hardware type of headphones headband features in line control volume control padded headband function mute microphone properties noise cancelling microphone material plastic earcup material mock leather included in delivery user manual usb cable series plantronics blackwire