Huawei U8100 User Guide - Manual (Page 173)

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Appendix
designed to ensure safety for all users, regardless of age and
health.
The Specific Absorption Rate (SAR) is the unit of measurement
for the amount of radio frequency energy absorbed by the body
when using a device. The SAR value is determined at the
highest certified power level in laboratory conditions, but the
actual SAR level of the device when being operated can be well
below the value. This is because the device is designed to use
the minimum power required to reach the network.
The SAR limit also adopted by Europe is 2.0 W/kg averaged
over 10 grams of tissue. The highest SAR value for this device
type when tested at the ear is 0.688 W/kg.
Disposal and Recycling Information
This symbol on the device (and any included batteries) indicates
that they should not be disposed of as normal household
garbage. Do not dispose of your device or batteries as unsorted