If you have a reading tablet such as the Kindle, you know of the E-Ink screen. You don’t have to deal with glare, and you can read at any time of the day. If you also have a smartphone, then you probably deal with toting around your e-reader, phone, and charger cables for both to make sure that they’re all powered up. What if you could find a way to not only minimize the amount of stuff you have to carry, but to also cut down on your energy usage?

There’s a new case on the block called popSLATE, and it is looking like it has some serious potential. It is an iPhone 5 case that has an e-ink screen on the back of the case that will act as another screen. You can change what’s on it at a moment’s notice, check matters on your phone, and won’t have to worry about damage as it’s “nearly indestructible”. If you’d like an upgrade from your current plastic or rubber case, this will set you back around $100.