Charging and protecting, 2 in 1 function. Super fast charging. Built-in short circuit and overcharge protection. Integrated power switch allows you to turn on/off the battery case quickly. You need to remove the battery case if you want to sync the phone to the computer. Slim design with accurate cut-outs and S-Pen Hole. It's perfect for traveling and outdoor activities. You can also easily access to the buttons and ports of the phone without removing the battery case.