19Health and safety informationExposure to Radio Frequency (RF) SignalsYour wireless phone is a radio transmitter and receiver.It is designed and manufactured not to exceed theemission limits for exposure to radio frequency (RF)energy set by the Federal CommunicationsCommission (FCC) of the U.S. Government. Theselimits are part of comprehensive guidelines andestablish permitted levels of RF energy for the generalpopulation. The guidelines are based on the safetystandards that were developed by independentscientific organizations through periodic and throughevaluation of scientific studies.The standards include a substantial safety margindesigned to assure the safety of all persons,regardless of age and health.The exposure standard for wireless phones employs aunit of measurement known as Specific AbsorptionRate (SAR). The SAR limit recommended by the FCC is1.6W/kg.*SAR tests are conducted using standard operatingpositions specified by the FCC with the phonetransmitting at its highest certified power level in alltested frequency bands.Although the SAR is determined at the highestcertified power level, the actual SAR level of the phonewhile operating can be well below the maximum value.This is because the phone is designed to operate atmultiple power levels so as to use only the powerrequired to reach the network. In general, the closeryou are to a wireless base station antenna, the lowerthe power output of the phone.* In the U.S. and Canada, the SAR limit for mobile phonesused by the public is 1.6 watts/kg (W/kg) averagedover one gram of tissue. The standard incorporates asubstantial margin of safety to give additionalprotection for the public and to account for anyvariations in measurements.