OtterBox Alpha Glass Blue Light Guard defends your display against scratches and scrapes and protects your eyes against harmful blue light waves. The ultra-thin tempered glass is engineered to endure with advanced fortified material technology to withstand drops impact and daily wear. Plus Antimicrobial technology protects the surface of your phone from unwanted microbes*. All the tools you need are included for simple installation. With a limited lifetime warranty and hassle-free customer service OtterBox Alpha Glass Blue Light Guard delivers advanced protection for your screen and your vision.