Extraordinary design with an ultra slim power bank for easy-carry, simply put it in your pocket and you won’t feel a thing. Our micro USB charging interface works with all Android devices. Our exclusive circuit design can protect the battery from overheating, over charging and short circuit so you can be reassured. No need to worry about over charging cause our Smart Led technology can show you all status during charging. It is charging when blinking and it is ready when lighting still. It gives you extra 30% approximate battery level so you can keep enjoying your video or web surfing. Dual charging cradle can charge up 2 batteries simultaneously for extra usage.