Cellular phones emit electromagnetic waves in an omni-directional pattern. That means that these potentially harmful waves are being dispersed in all directions from your cell phone. When your phone is held next to your head some of these waves are blocked by the bone component of your skull. The radiation emitted from the earpiece however, encounters little resistance from the soft tissue of the ear canal. Cell Shield is the culmination of 8 years of intensive research and development in cellular protection. Cell Shield is made of a ceramic composition that absorbs electromagnetic radiation waves.