SUPER Micro USB Universal Fast charge Power Bank with 20000 mAh. Li-polymer battery 20000 mAh High Capacity Double USB Port Universal Portable Power Bank With The Best Quality Main Function and Applications: This mobile power bank is used for charging almost all types of digital devices such as tablets, mobile phones, MP3/MP4, digital camera, Bluetooth earphone, GPS, PSP, digital frame etc. It's an ideal item for supplying power for your digital devices when you are outdoor or travel. Hot personal or promotion gift! Power banks are used for providing portable power to charge battery powered items like mobile phones and other similar items that have a USB interface: they can charge via USB, etc or wirelessly. Compatible With : Smart Phone, Voltage : 5 V, Power Current : 2 A, Interface : Type-C Port, Micro-USB Port