SAR information

What is a SAR value?

Every mobile device model is tested for radio wave emissions. Using an internationally standardised method that meets government and regulatory requirements, a measurement is made to determine how much electromagnetic energy is absorbed by body tissue. This gives the SAR (specific absorption rate) value. Governmental and regulatory agencies have established SAR limits under which mobile device use has been determined by them to be safe. All Microsoft devices are designed to comply with the relevant governmental SAR level.

Important user information

Features of device models are sometimes revised or improved during production. This could lead to a situation where the same device type appears to have different SAR values. If so, please refer to the user guide shipped with your device to see the SAR value of your device.

Find the SAR value for your device

Use our service (provided in several languages) to check the SAR value and certification information for your Microsoft mobile device.

How mobile communications work
Radio waves and you
Research & regulation
Making informed choices


Article ID: 12673 - Last Review: Jun 8, 2016 - Revision: 6