best noise cancelling headphones for sleeping three junior boys leave the body

    Junior high school age, a certain place three boys obviously, is a "best noise cancelling headphones for sleeping"In addition to classes, the rest of the time wearing best noise cancelling headphones for sleeping. Recently, he even normal voices are inaudible. Doctors said he was suffering from nerve deafness, has been unable to restore hearing.

    Experts suggest that each wear best noise cancelling headphones for sleeping best noise cancelling headphones for sleeping Volume should not exceed 60% of the maximum volume, continuous listening time not more than one hour. Listen to one hour, rest 15 minutes, listen to one hour, then rest for 15 minutes. So again, in order to better protect their ears.