High quality Stereo sound with deep bassmax output set to 95dbnoise cancelling microphoneadjustable soft foam ear pads (fits all ages)6 foot USB cordThe Kensington USB Hi-Fi Headphones with Microphone provide high-quality stereo sound, a microphone designed to support voice clarity and best-in-class comfort features. Supporting common core learning standards, the headphones provide a maximum output of 94dB for safe listening, with the mic supporting the latest audio-based classroom testing requirements. The headset is suitable for students, call centres, business professionals and gamers. High-Quality Stereo Sound is provided through powerful 40mm drivers with deep base and a wide dynamic range to deliver an exceptional listening experience. Best-in-Class Comfort – designed to fit heads of all ages, the adjustable headband is padded and the foam earpads are wrapped in a soft leatherette cover to provide hours of comfortable use. Noise-Cancelling Microphone uses passive resistance technology to filter out ambient noise for optimum speech clarity. Safe Listening Limit sets the maximum output to 94dB to protect ears from hearing loss associated with an excessively loud noise. 1.8m USB Cable is the ideal length for learning environments and strong enough to stand up to heavy use. Multi-Device Compatibility allows headphones to work with Windows, Mac and Chromebook devices. Compatible with Windows, Mac and Chromebooks for a simple plug and play experience.