Offering unsurpassed speech and sound clarity, Andrea Communications EDU-255 On-Ear Stereo Headset also includes a convenient in-line volume control *on most models. The exclusive noise-canceling microphone with internal windscreens, which minimize 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. Plush leatherette ear cushions are easy to wipe clean and the adjustable headband ensures a comfortable fit even on smaller heads.