These Energy Pendants are lab tested for safety & proven to block out Electro-magnetic frequencies. We recommend wearing this pendant during the day and taking it off at night. The minerals in the pendant are blended with lava stone to neutralize EMF waves and ground to your energetic frequency. Try not to let other people wear or touch your pendant. The negative ions will begin to harmonize & optimize your specific energy within the first month. You can clean your pendant by running it under a fresh water source or leaving it out in the sun for 15-20 minutes. The negative ions are nano-infused and our tests show that the negative ion charge lasts for life so there is no need to recharge the pendant. These 27 natural Earth minerals combine to create a negative ion charge which counteracts positive ions emitted by wireless technology and electronic usage.