The Hedron EMF Shield is a 1 inch by 1 inch EMF Protective Device that is placed on the back of your electronic devices to change the harmful EMF frequencies into beneficial frequencies. It is comprised of 12 specific harmonizing minerals and is ‘impregnated’ with a frequency called Scalar Energy, which matches the earth’s beneficial frequency of 7.83 Hz. This frequency is also called Schumann’s Resonance, the most highly beneficial frequency on the planet.