Gosin 12000mah Led Display Fast Charging dual USB Portable External Extended Battery Pack Backup Charger with Mini LED Desk Lamp, Just Simply Shake It to Show the Remaining Power LARGE CAPACITY OF 12000 mAh, and the weight is only 250g, while average weight with same capacity from other sellers is around 300g-350g. BUILT-IN FIGURE LED INDICATOR, easy to know the remaining capacity. You just SHAKE IT, the remaining capacity will show you. At a size of 15.1 x 5.2 x 2 cm, This power bank is PORTABLE AND EASY TO HOLD or put anywhere you want, e.g. in a pocket or bag; the best choice of backup while traveling, during meetings, or for daily use With smart USB port, THE ELECTRIC CURRENT CAN BE CHANGED AUTOMATICALLY as per your cellphones'electric current, which prolong the battery life-span SUPERIOR QUALITY: The material of the power bank is made of aluminium alloy and PVC, it is a greating hand-feeling to touch it. Perfect gift for yourself and yuor freinds