Casio EXILIM C721 - Manual (Page 207)

206
Safety
How will I know if my hearing aid will work with a
particular digital wireless phone?
You’ll want to try a number of wireless phones so that you can
decide which works the best with your hearing aids.
You may also want to talk with your hearing aid professional about
the extent to which your hearing aids are immune to interference,
if they have wireless phone shielding, and whether your hearing
aid has a HAC rating.
For more information about hearing aids and digital
wireless phones:
• FCC Hearing Aid Compatibility and Volume Control
http://www.fcc.gov/cgb/dro/hearing.html
• Hearing Loss Association of America
http://www.hearingloss.org/learn/cellphonetech.asp
• CTIA
http://www.accesswireless.org/hearingaid/
• Gallaudet University, RERC
http://tap.gallaudet.edu/voice
k Avoid potential hearing loss.
Prolonged exposure to loud sounds (including music) is the most
common cause of preventable hearing loss. Some scientific
research suggests that using portable audio devices, such as
portable music players and cellular telephones, at high volume
settings for long durations may lead to permanent noise-induced
hearing loss. This includes the use of headphones (including
headsets, earbuds and Bluetooth or other wireless devices).
Exposure to very loud sound has also been associated in some
studies with tinnitus (a ringing in the ear), hypersensitivity to