Reduce EMF 99%: The cell phone anti-radiation protection shield sticker decreases the amount of electromagnetic radiation, reduces radiation exposure by up to 99%, absorbs and neutralizes the harmful effects of EMF/EMR radiation generated by electronic devices, Provide comprehensive protection for your body How it works: Common electronic radiation, Bluetooth and WI-FI can harm the body. The anti-radiation sticker is composed of an anti-radiation film and a negative ion film, which releases negative ions that can neutralize the positive ions generated by electronic equipment to protect health from electromagnetic radiation. Easy to use: You can easily stick EMR stickers on the back of cell phones and other electronic devices. The EMF anti-radiation shield will not be downgraded! It has a long service life and will serve you for a long time. Slim Size: The slim and lightweight body is not enough to add weight to the phone, and the new ultra-thin design allows you to put it on the phone