DescriptionThese blocker stickers can be applied for WIFI, computer, Kindle, laptop, keyboard, mouse etc. These stickers can highly reduce harmful effects of EMF / EMR radiation generated by electronic devices. There is no reason for you to refuse such a good product. Don't miss it.Features- Color: Golden. - Material: Metal. - Size: About2.60X2.60X0.10cm/ 1.02X1.02X0.04inch. -They transform radiation in another good ways without blocking signals.- Suitable for smart phone, cell phone, laptop, PC and other electronic devices.- These slim lightweight stickers could be applied to any cellphone or phone cases.- They can effectively remove phenomena such as headache, insomnia and hair loss.- Releasing negative ions that neutralizes positive ions produced by electronic devices.