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various positions, they all meet the government requirement 
for safe exposure.
The FCC has granted an Equipment Authorization for this 
model device with all reported SAR levels evaluated as in 
compliance with the FCC RF emission guidelines. SAR 
information on this model device is on file with the FCC and 
can be found under the Display Grant section of http://www.
fcc.gov/oet/fccid after searching on FCC ID ZNFV521. 
Additional information on Specific Absorption Rates (SAR) can 
be found on the Cellular Telecommunications Industry 
Association (CTIA) website at 
http://www.ctia.org/.
* In the United States and Canada, the SAR limit for mobile 
deviceusedbythepublicis1.6watts/kg(W/kg)averaged
over one gram of tissue. The standard incorporates a 
substantial margin of safety to give additional protection for 
the public and to account for any variations in 
measurements.
Caution: 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 sound and distorted hearing. Individual 
susceptibility to noise-induced hearing loss and other potential 
hearing problems varies. The amount of sound produced by a 
portable audio device varies depending on the nature of the 
sound, the device, the device settings and the headphones. 
You should follow some commonsense recommendations 
when using any portable audio device:
• Set the volume in a quiet environment and select the 
lowest volume at which you can hear adequately. 
• 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 










