4 Output Ports: All output port is 5V/2.1A , you can charge 4 devices at the same time, the device's charging capacity is powerful, you can also share with your friends.
LED display and lights: 300000mAh power bank with LED display, you can display the remaining power, so you clearly know when to charge the power bank. Side there is a LED light, in the dark to give you light.
Nine security protection modes: to prevent excessive charging, excessive discharge, the voltage is too high, the current is too large, too much power, high temperature, circuit short circuit, reverse charge, battery instability.