USB Hi-Fi Headphones with Microphone provides high-quality stereo sound, a microphone designed to support voice clarity, and best-in-class comfort features. Supporting Common Core learning standards, these headphones provide a maximum output of 94 decibels for safe listening, and the mic supports the latest audio-based classroom testing requirements. Noise-canceling microphone uses passive-resistance technology to filter out ambient noise for optimum speech clarity. Powerful, 40mm drivers with deep bass and a wide dynamic range deliver an exceptional listening experience. Headphones are suitable for students, call centers, business professionals and recreational gamers. Designed to fit heads of all ages, the adjustable headband is padded. Flexible, boom-style microphone can be rotated up to 270 degrees. Foam ear pads are wrapped in a soft leatherette cover to provide hours of comfortable use. They are compatible with Windows, Mac and Chromebook for a simple plug-and-play experience.