20000mAh, High Capacity,Mirror reflection surface.It can fully charge most phones and smart devices 3-6 full charges.It Is Easy To Put It In The Pocket.The power banks has dual outputs (all is 5V, 2A), you can charge two devices at the same time. And the power banks has dual inputs (all is 5V, 2A), whether you use an iOS or an Android phone, you only need to carry one cable. Portable charger with digital display, it can clearly tell you how much power left.Power Bank Built-in safeguards can automatically protect your devices against excessive current, overheating, short-circuit and overcharging, making charging safer.