The RF Safe Air Tube Headsets Air-tube Headsets has a USA Head SAR of 1.11 W/kg which is 69.38% of the FCC legal limit of 1.60 W/kg!
Phone radiation limits are different depending on where you live. The FCC/IC (USA Standard) and the Council of the European Union (EU Standard) are measured over a different amount of tissue, either 1g or 10 grams, and different maximum power levels of 1.6 W/kg vs. 2.0 W/kg, so they are not directly comparable.
The SAR limit set by the FCC/IC is 1.6W/kg, averaged over 1 gram of actual tissue.
The SAR limit recommended by the Council of the European Union is 2.0W/kg averaging over 10 g of actual tissue. Click these links to display EU ratings for EU Head and EU Body
SAR levels for the iPhone 6 Plus are merely .01 below the legal 1.6 W/kg limit! This barely legal device states in the owners’ manual not to keep an iPhone 6 Plus closer than 5 mm to your body! Get Protected! Shield it!