This is a set of 6 electromagnetic wave-blocking stickers. Our modern lives are filled with electromagnetic waves. Headaches, eye strain, migraines, insomnia, etc. Are there people who are actually experiencing physical effects? You can stick them on smartphones, PCs, TVs, refrigerators, microwave ovens, etc. If you purchase more than 6, we will offer a discount, so please let us know in the comments. (Up to 100 stickers can be purchased) The box is not included.