"OtterBox UNIVERSE SERIES Interchangeable Modular Case for iPhone 11 and iPhone XR (Non-Retail Packaging) - Black Expand the functionality of your iPhone 11 with the uniVERSE case system from OtterBox. The UniVERSE case features a slotted rail under its removable accent plate, allowing you to attach and swap powerful modules like camera lenses, card readers, batteries, speakers, and more without removing the case."