iPhone 6S Plus Case,CASY MALL Magnetic Flip Leather Wallet Case with 9 Card Slots and Removable Slim TPU Back Case for Apple iPhone 6S Plus 5.5 Inch Brown Use rechargeable lithium polymer battery. Integrated power switch allows you to switch on/off the battery case. Only use the battery when you need it. We can provide custom phone cases with any design for you. If you want, please contact us! Easy Access to all device ports and controls 2-3 weeks' shipping