SAR stands for Specific Absorption Rate, and is the rate that cell phone radiation emissions are absorbed into the body. The FCC states that an exposure limit of 1.6 watts per kilogram is an acceptable level. The limit in the European Union is 2.0 W/kg averaged over a larger mass. While this is the standard that has been accepted as safe, it is based on the assumption that EMF can only create thermal damage with chronic exposure. This ignores research showing that other biological effects are evident at lower levels of radiation exposure, below levels necessary for thermal heating. If these standards were to be updated, they might show a lower limit. For now, SAR thermal absorption standards are helpful for comparing radiation emissions between different devices, but it by no means establishes an absolute safe level for these emissions. Click HERE to read more about SAR and International Exposure Standards.