Scope of application: Used for Pregnant women, children, the elderly, patients People who regularly use mobile phones, computers, and electronic devices People who regularly use tablets, Kindles, computers, air conditioners, refrigerators, microwave ovens, printers, washing machines, and office automation equipment People who live or work near high voltage, substation, radio, radar station and electromagnetic transmission tower Product Name: Radiation Protection Stickers Material: PET self-adhesive functional film Thickness: about 2 6mm 0.08-0.24in Patch size: approx. 48.5 32.5mm 1.93 1.3in Qty: 8 16 24 32PCS set(as your order) Package Included: 8 16 24 32 x EMR Radiation Protection Sticker Notes: Other accessories demo in the picture is not included. Please allow slight dimension difference due to different manual measurement. Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Steps: Peel off and stick to the back of the phone or any other electronic device. Some devices may only require one radiation protection tag, while others may require 2 or more, depending on the nature of the device. Working principle: The electromagnetic frequency (EMF) and electromagnetic radiation (EMR) emitted by electronic devices are harmful to our nerve cells. When a positive ion is present, our magnetic anion quantum shield neutralizes the positive ion (EMF EMR) effectively negates and neutralizes EMF and EMR. Easy to use: You can easily paste EMR stickers on the back of your phone and other electronic devices. You can put it on your phone and any other electronic device. It is a portable EMF protection device that you can carry with you!. Suitable range: mobile phones, digital cameras, camcorders, notebook computers and various household appliances using lithium-ion rechargeable batteries. Protect you and your family with EMF radiation stickers: Reduce radiation with up to 99 of radiation shield stickers to create a safe and healthy environment for you and your family.