Per site: TzumiGuardian Smartphone Case and Charger for iPhone X$44.99The Guardian 3000 by tzumi is a phone case designed to do it all provide lightweight coverage with complete protection from the elements, effortlessly power your iPhone, and do it all in a super-lightweight, thin and unobtrusive package. The Guardian and its Power Module are the perfect duo, providing portable wireless power to your active lifestyle. Our goal is to protect and power your iPhone 8 Plus while still keeping it looking slim and sophisticated.Maximum Protection: For as tough and durable as the Guardian is, its so lightweight that you'll hardly notice its there. This high-density protective shell is built with a soft-touch silicone finish, which provides slip-proof coverage and safeguards against the shock damage that can occur when a phone is dropped. Its also built to be completely water-tight (even the charging ports) and is IP68 Waterproof Certified, so you know your phone is in good hands.EZ Attach 3000 Power Module: The Guardian 3000 comes with a bonus Power Module that snaps onto the back of the case and serves as a 3000 mAh Lithium Ion battery for wireless or wired charging (depending on your preference). Once fully charged (which takes 3-4 hours), the Power Module is able to re-charge most smartphones up to two times. It also comes with a miniature Micro-USB-to-Lightning Cable so that you can begin charging right out of the box.Safety First: The Guardian utilizes QuickChip Control and Power Source Chipset technology, which ensures a steady stream of power rid of any risk. Over-charging, over-discharging and overheating are all problems of the past when your iPhone is protected by the Guardian case and its Power Module.Note: This case is not waterproof when Power Module is in use.