The Collaborative on health and the environment (CHE) electromagnetic radiation-proof organization discussed on the safety of cell phones and proposed that the air tube earphones be preferable
 http://www.healthandenvironment.org/wg_emf_news/6621

American EMR Policy Institute issued cell phone radiation statement and pointed out that it is best to use air tube earphones. The cell phone with a lower specific absorption rate( SAR) is most likely to aggravate pathological leakage of the blood-brain barrier. ( Oct. 1st, 2009)
 http://www.emrpolicy.org/

■ American Environmental Working Group proposed not to use patches---the patches stuck on antenna or cell phone will weaken the telecommunication quality and thus force cell phones to transmit signals at higher power with higher radiation
 http://www.ewg.org/cellphoneradiation/8_Safety_Tips

 Changjiang radiation-proof earphones are rightly air tube earphones!