8
9
Cell phone compatibility rating
Some hearing aid users have reported a buzzing
sound in their hearing aids when they are using
cell phones, indicating that the cell phone and
hearing aid may not be compatible. According
to the ANSI C63.19 standard (ANSI C63.19-
2006 American National Standard Methods of
Measurement of Compatibility Between Wireless
Communications Devices and Hearing Aids), the
compatibility of a particular hearing aid and cell
phone can be predicted by adding the rating for
the hearing aid immunity to the rating for the cell
phone emissions. For example, the sum of the
hearing aid rating of 4 (M4) and a telephone rating
of 3 (M3) would result in a combined rating of 7.
Any combined rating that equals at least 5 would
provide “normal use”; a combined rating of 6 or
greater would indicate “excellent performance.”
The immunity of this hearing aid is at least
M4/T4*. The equipment performance
measurements, categories and system
classifications are based upon the best
information available but cannot guarantee that
all users will be satisfied.
* For models featuring a telecoil input option
Note: The performance of the individual
hearing aids may vary with individual cell
phones. Therefore, please try this hearing aid
with your cell phone or, if you are purchasing
a new phone, please be sure to try it with your
hearing aid prior to purchase. For additional
guidance, please ask your hearing healthcare
professional for the booklet entitled “Hearing
aid compatibility with digital wireless cell
phones.”
SoundCore technology
SoundCore
™
includes four intelligent features
working together to understand your listening
environment making the fluid adjustments
needed so you can actively participate in every
conversation across every environment.
EarMatch
The EarMatch
™
process provides the best
personalized performance by compensating for
your unique ear shape.
