E7 Active Noise Cancelling headphones are the best-performing around-ear headphones from COWIN. With a 30 hours playtime at Bluetooth mode. Enjoy music all the time. They give you crisp, powerful sound–and quiet that lets you hear your music better. They give the music you love deep, clear sound. At the same time, COWIN active noise canceling technology monitors the noise around you and cancels it out, helping you focus on what you want to hear–whether it’s your music, your calls or simply peace and quiet. The E-7 have a lightweight comfortable around-ear fit you can wear all day long. 90° swiveling earcups, professional protein earpad, and headband material deliver more durability and comfort.