Tested to exceed U.S. Mil-Spec drop tests Dux Plus Duo withstands the rigours of the classroom work and everyday use. Designed with educators and IT professionals input the case features our patented magnetic closure a transparent back for asset tagging or user customization and integrated storage that can accommodate either the Apple Pencil or Logitech Crayon.we believe good enough isnt good enoughSo we make it a point to go above and beyondeven in the way we test our products. Military standards for drop testing require that a product like Dux be able to maintain all operating functions after plummeting 26 times for a height of 4 feet. We subjected Dux to our own extreme testing at 6.6 feet. It passed. And that calls for the best drop of alla mic drop.If Youre Looking to Make a Case All Your Own the Choice Is ClearWe use completely transparent materials for our back panel that allow you to customize your device with personal images scan a tagging barcode or simply let the beauty of your device shine through. But theres one more thing we want to make perfectly clear: this stylish case still provides the maximum level of protection for your digital gear.We Believe a Battery Should Only Be Running When a Device Is in UseChances are you probably feel like youre charging and recharging your digital devices more often than youd like. Its just the nature of the beast. So we just thought wed do our part in helping you maximize the time between juicing up. Our instant on/off cover wakes up your tablet when its open and puts it to sleep when its closed. Its a real (battery) lifesaver.