The Andrea Communications EDU-455 Over-Ear Headset offers unparalleled speech and sound clarity and includes a convenient in-line volume control. The exclusive noise-cancelling microphone with internal windscreens, which minimise breath popping, has been awarded the coveted "6 Dragon" rating for speech accuracy by Nuance. The heavy duty rigid boom and swivel allow for perfect microphone placement. Extra-thick leatherette ear cushions block out surrounding noise. An adjustable dual headband ensures a comfortable fit even on smaller heads.