The solar power bank also has a built-in LED flashlight which is also charged by the solar charger. It has three settings, Steady, “SOS” and Strobe, which, while just an extra feature, is a useful addition to the power bank. Not only does it use light, but it makes it too.This solar power bank is also completely waterproof.It also comes in a high-quality,prevent dust and drop.The two-USB port design allows for two devices to be charged at the same time, and both USB ports are good for fast charging, meaning that newer devices with fast charging cables will still be able to use fast charging with this device. In addition the solid capability are what bring this solar power bank into second place on our list.