Stylish and soft black PU leather folder with a built-in, external auxiliary battery of high charge capacity -5,000 mAh-. In sober design and zipper opened, with plenty of storage compartments to store business cards, USB flash memories, plus a touch screen case for smartphones and LED charge indicators on the back of the folder. Includes a 20-page A4-size notepad and a tablet holder up to 9.7 inches. The easy access to the charging station via micro USB cable - included- make of this folder the perfect gadget for business and studying.