EASY TO USE - These stickers can be applied to phones, laptops, tablets, PCs, TVs, and other small electronic devices. Simply place a sticker on the back of your phone or on the surface of your device. EFFECTIVENESS - Each sticker is designed to help reduce exposure to EMF/EMR emitted by electronic devices. WHAT IT DOES - Everyday electronic devices emit EMF (electromagnetic frequencies) and EMR (electromagnetic radiation). This cell phone protection sticker is designed to help absorb and neutralize ions associated with EMF/EMR. SLIM DESIGN - The thin and lightweight design does not add bulk to your device. The ultra-thin profile allows for easy application on phones and other electronics. Portable and convenient for daily use. TYPE: EMF Protection Sticker COLOR: Silver MATERIAL: Silicone SIZE: Diameter 28mm PACKAGE CONTENTS: 20 x Sticker Note: The package includes only the items listed above. Other products are not included. Note: Lighting and monitor settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.