Plantronics blackwire c320 m
Usb headset stereo pc headset design on ear types dynamic semi open transmission mode cable types of connection usb usb 20 type of cable single sided sound mode 20 hardware type of headphones headband features volume control functions mute dsp technology headphone transmission range 20 22000 hz microphone properties noise cancelling microphone material plastic earcup material foam included in delivery user manual usb cable series plantroni