Casio BOULDER GzOne User Manual page 229

• Limit the amount of time you listen. As the volume
increases, less time is required before your 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.
k You can obtain additional information on this
subject from the following sources:
American Academy of Audiology
11730 Plaza American Drive, Suite 300
Reston, VA 20190
Voice: (800) 222-2336
Email: info@audiology.org
Internet: www.audiology.org
National Institute on Deafness and Other
Communication Disorders
National Institutes of Health
31 Center Drive, MSC 2320
Bethesda, MD USA 20892-2320
Voice: (301) 496-7243
Email: nidcdinfo@nih.gov
Internet: http://www.nidcd.nih.gov/health/hearing
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