SAR (Specific Absorption Rate)

SAR, or Specific Absorption Rate, measures the amount of radiofrequency energy absorbed by the body when using devices like cell phones. It is expressed in watts per kilogram (W/kg). Regulatory agencies set SAR limits to ensure devices are safe and do not expose users to harmful levels of radiation. A higher SAR indicates more energy absorption, but it doesn't automatically mean harm, as actual health effects depend on exposure duration and power levels. SAR helps consumers compare the radiation emissions of different devices and make informed choices regarding safe usage.