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Emergency Communication
The device should not be relied upon for essential 
communications (medical emergencies, calls to 911, or 
communications to emergency services). The device is not 
designed or intended to be used for such communications. 
Voice Over Internet Protocol (VOIP) services which may be 
used on the device to make phone calls do not support 911 
calls and are only intended for talking with friends.
Responsible Listening
Caution!: Avoid potential hearing loss.
Damage to hearing occurs when a person is exposed to loud 
sounds over time. The risk of hearing loss increases as sound 
is played louder and for longer durations. 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 cell phones, 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 sound, and distorted hearing. Individual susceptibility to 
noise-induced hearing loss and potential hearing problem 
varies. Additionally, the amount of sound produced by a 
portable audio device varies depending on the nature of the 
sound, the device settings, and the headphones that are used. 
As a result, there is no single volume setting that is appropriate 
for everyone or for every combination of sound, settings, and 
equipment.
You should follow some common sense recommendations 
when using any portable audio device:
Always turn the volume down before plugging the 
earphones into an audio source.
Set the volume in a quiet environment and select the 
lowest volume at which you can hear adequately.
Be aware that you can adapt to higher volume settings 
over time, not realizing that the higher volume may be 
harmful to your hearing.
When using headphones, turn the volume down if you 
cannot hear the people speaking near you or if the 
person sitting next to you can hear what you are listening 
to.
Do not turn the volume up to block out noisy 
surroundings. If you choose to listen to your portable 
device in a noisy environment, use noise-cancelling 
headphones to block out background environmental 
noise. By blocking background environment noise, noise 
cancelling headphones should allow you to hear the 
music at lower volumes than when using earbuds.
Limit the amount of time you listen. As the volume 
increases, less time is required before you hearing could 
be affected.
SPH-P100.book  Page 198  Saturday, February 5, 2011  3:00 PM