Say yes to more power and more storage with the Kuner KUKE iPhone 7 Memory Expansion Battery Case. With a powerful 2400 mAh battery built in, you can recharge your device in a flash. On the back are indication lights to let you know how much power is left. Simply slide your phone into the flexible and protective case, tap the button, and it will initiate a charge. It features an in-built Micro SD card slot and comes with a support for an SD card of up to 256 GB. The Kuner KUKE battery case allows audio to pass through and supports Lightning headphones. Available in black and white colors to match the color of your iPhone.