Overview : Andrea Communications EDU-255 USB offers unsurpassed speech and sound clarity. The exclusive noise-canceling microphone with internal windscreens, which minimize voice 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. Features : Proprietary noise-canceling microphone Heavy duty rigid microphone boom and swivel 40mm speakers with deep bass sound deliver crystal clear audio Plush, extra-thick leatherette ear cushions are easy-to-clean and replaceable Adjustable headband for 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