Professional Active Noise Cancelling Technology. Significant noise reduction for travel, work and anywhere in between. Advanced active noise reduction technology quells airplane cabin noise, city traffic or a busy office, makes you focus on what you want to hear, enjoy your music, movies and videos. The noise cancellation function can work well both in wire and wireless mode Much Better Sound. Proprietary 45mm large-aperture drivers provide you with deep, accurate bass response. From 75dB to 85dB, the COWIN E7 PRO Active Noise Cancelling Over Ear headphones give you crisp, powerful sound and quiet that helps you enjoy your music better. The goal that provides Customers with better sound quality, is our constant pursuit Upgraded Soft Ear Cushions for Comfort with The professional protein earpad and 90 swiveling earcups: This Bluetooth headphones are equipped with Upgraded Soft Ear Cushions, which not only make it much more durability and comfort, but also make customers enjoy this high-quality, Long-listen feast. And the Skin texture, lightweight comfortable around-ear fit you can wear all day long. Gentle Reminder: please take off the headphones every 2-3 hrs to get your ears relax