Effectively reduce radiation: these radiation protection stickers can absorb EMF and counteract harmful effects of EMF radiation generated by various electronic devices, effectively reduce large amount of radiation exposure from electronic devices, providing protection to you and your familyNice adhesion: these anti radiation protector stickers are self-adhesive, easily stick to multiple smooth and clean surfaces, like metal, wood, glass, plastic and so on, easy to paste and remove without leaving obvious residue, good adhesion can serve you long termHow it works: these radiation protection cell phone stickers are made of radiation protection film and negative ion film, releasing negative ions that neutralizes positive ions produced by various electronic devices to protect us from EMF radiation, practical accessory in our lifeFit for most electronic devices: these EMF blockers are widely applied in your daily life, can be pasted to smart phone, computer, laptop, air conditioner, refrigerator, microwave oven, printer, washing machine and other electronic devices, easily transforms radiations into other harmless forms without blocking signalsEnough quantity and proper size: you can get 16 pieces radiation blockers, each measures approx. 2.67 cm/ 1.05 inches in diameter, small size for portable to use, sufficient quantity to meet your daily use and replacement