There are only a few players in the industry that make e-ink cases for your smartphone, but Oaxis is the first one to develop one for the new iPhone 7.
The InkCase i7 features a 4.2 inch e-ink screen with a resolution of 480 by 800 and 217 PPI. This device hooks up to your iPhone via Bluetooth and is good for about a month before you have to hook it up to the proprietary magnetic charger.
Oaxis used to have a bunch of different apps to control your e-ink experience. Now, they have a singular app for iOS that allows you to change the wallpaper, organize your task list, view your calendar, display the time or just read an e-book.
The i7 is going to ship at the end of November and it will retail for $129.00.