Overview : The Andrea Communications EDU-455 USB Over-Ear Headset offers unparalleled speech and sound clarity. 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. Extra-thick leatherette ear cushions block out surrounding noise. An adjustable dual headband ensures a comfortable fit even on smaller heads. Features : Proprietary noise-canceling microphone with internal windscreens Heavy duty rigid microphone boom and swivel 40mm speakers with deep bass sound deliver crystal clear audio Large circumaural (over-ear) cups reduce up to 75% of background noise Plush, extra-thick leatherette ear cushions are easy-to-clean and replaceable Adjustable dual headband for a comfortable fit Extra-long 8-foot cable with external USB sound card and USB plug Well-built and cost-effective Certified safe for use by children in accordance with the United States Consumer Product Safety Commission Compatibility : • PC: Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1, and Windows 10 • Apple: Mac OS X 10.5 and higher