A5 imitation leather folder with built-in portable battery (lithium). This folder includes a pen holder (pen not included) and a removable notepad with 64 lined ivory sheets. The battery has a capacity of 4,000 mAh, lifetime ≥ 500 cycles, with 5V/1A input/output and USB/micro USB cable to charge the battery. The folder contains elastics inside for organizing and support for smartphone and, on the outside, a rubber-finished plate with interior LED and on/off button. This product is supplied in a gift box.