I think what you are saying is "By using this set of earbuds, you will not expose yourself to the radiation which you would expose yourself if you held a cellphone up to your face or used a Bluetooth transmitter that was stuffed in your ear". The FCC and whoever else approves those levels of radiation to be within permissible limits, but the International Agency for Research on Cancer classifies the relevant Electromagnetic Field (EMF) radiation as
possibly carcinogenic. The FCC has also decided to
review its assessment scale to decide whether the ratings should be changed. The current standard is
< 1.6 Watts per kilogram (averaged over one gram of tissue).
The FCC has also addressed the specific question of "
DO "HANDS-FREE" EAR PIECES FOR MOBILE PHONES REDUCE EXPOSURE TO RF EMISSIONS? WHAT ABOUT MOBILE PHONE ACCESSORIES THAT CLAIM TO SHIELD THE HEAD FROM RF RADIATION?On that point:
"Hands-free" kits with ear pieces can be used with cell phones for convenience and comfort. In addition, because the phone, which is the source of the RF emissions, will not be placed against the head, absorption of RF energy in the head will be reduced. Therefore, it is true that use of an ear piece connected to a mobile phone will significantly reduce the rate of energy absorption (or "SAR") in the user's head. On the other hand, if the phone is mounted against the waist or other part of the body during use, then that part of the body will absorb RF energy. Even so, mobile phones marketed in the U.S. are required to meet safety limit requirements regardless of whether they are used against the head or against the body. So either configuration should result in compliance with the safety limit. Note that hands-free devices using “Bluetooth” technology also include a wireless transmitter; however, the Bluetooth transmitter operates at a much lower power than the cell phone.
A number of devices have been marketed that claim to "shield" or otherwise reduce RF absorption in the body of the user. Some of these devices incorporate shielded phone cases, while others involve nothing more than a metallic accessory attached to the phone. Studies have shown that these devices generally do not work as advertised. In fact, they may actually increase RF absorption in the head due to their potential to interfere with proper operation of the phone, thus forcing it to increase power to compensate.
Anyway - I'm going to come out as stating this as a simple fact: These headphones are not capable of blocking radiation. They are however capable of preventing exposure to radiation to your brain at close range from the use of cellphone directly, pressed against your head. If you want to use a headset for that purpose, then these headphones will block your exposure to that radiation at a rate that is precisely equal to any other wired headset. Maybe marginally more if they are EMF shielded at a greater-than-average rate - but it is up to you to decide whether you are concerned about cellphone radiation in the first place, and whether any tech used in this particular headset "shields" any more radiation than any other set of headphones.