This solar power bank has a built-in rechargeable 3.7v battery that with a 80000mAH capacity that uses two-way quick charge technology for shorter charging time. It is waterproof and has two USB output ports so two devises can be charged at the same time and one input Micro USB port that has a max input of 15w. It has two led lights to light your way in dark times. In addition, it can be used with all mobile devises that have the proper USB ports.

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