No matter which type of Cuff you decide to purchase, the materials from which it has been manufactured are infused with Life Harmony Energies' proprietary, dual-level EMF protection which offers two active methods for keeping you healthy: Direct Technology The first level of protection is designed to direcly neutralize dangerous EMF radiation. The energies that your Cuff emit are extremely useful at rendering EMF frequencies harmless without interfering or disabling the devices in the immediate, surrounding areas. Adaptive Technology The second level of protection uses energies that adapt to your body and what it needs to fortify itself against the negative and damaging effects of EMF radiation. The energy from the Cuff becomes absorbed and engaged through your meridian system to give the body an enhanced, beneficial energy that circulates through you and energizes the cells to support good health.