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• 

Limit the amount of time you listen. As the volume 

increases, less time is required before you hearing 

could be affected.

• 

Avoid using headphones after exposure to extremely 

loud noises, such as rock concerts, that might 

cause temporary hearing loss. Temporary hearing 

loss might cause unsafe volumes to sound normal.

• 

Do not listen at any volume that causes you 

discomfort. If you experience ringing in your ears, 

hear muffled speech, or experience any temporary 

hearing difficulty after listening to your portable 

audio device, discontinue use and consult your 

doctor.

You can obtain additional information on this 
subject from the following sources:

Operating Environment

Remember to follow any special regulations in 
force in any area, and always switch your mobile 
device off whenever it is forbidden to use it, or 
when it may cause interference or danger. When 
connecting the mobile device or any accessory 

11730 Plaza American Drive, Suite 300
Reston, VA 20190

Voice: (800) 222-2336
Email: info@audiology.org

Internet:
 

National Institutes of Health
31 Center Drive, MSC 2320
Bethesda, MD 20892-2320

Email: nidcdinfo@nih.gov

Internet: 
 

395 E Street, S.W., Suite 9200
Patriots Plaza Building
Washington, DC 20201

Voice: 1-800-35-NIOSH 
(1-800-356-4674)
1-800-CDC-INFO (1-800-232-4636)
Outside the U.S. 513-533-8328

Email: cdcinfo@cdc.gov

Internet:

1-888-232-6348 TTY