http://www.emfnews.org/
When exposed to radio frequency fields, the body absorbs energy over time. The rate at which energy is absorbed is known as the Specific Absorption Rate (SAR), and it varies throughout the body.
For handheld mobile phones, the exposure is largely confined to part of the head closest to the phone’s antenna. The European Union has set a radio frequency safety limit for the human head at a Specific Absorption Rate (SAR) of 2 W (2000 mW) per kilogram of tissue.
Mobile phones are tested assuming worst-case conditions: the rate at which energy is transmitted by a mobile phone operating at maximum power. In practice, the power transmitted during a mobile phone conversation is generally hundreds or thousands of times lower than the maximum power assumed. Indeed, the “power control” feature of a mobile phone automatically reduces the emitted power if higher intensity is not needed...
http://www.emfnews.org/store/
http://www.emfnews.org/products.html
