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This is a wireless charger. At the bottom, it is a paste. In the outdoor,we can stick it with our schoolbag or laptop bag.The solar energy that it absorbs can change into electric energy and storage.When quantity of electricity less than 20%,it can charge up for mobile phone automatically.The charger takes advantage of the electromagnetic resonance technology. We can use it charge for mobile phone as long as they are in the limit of 2.7 m.We won’t worry about the shortage of power any more!A storm may arise from a clear sky.Sometimes unexpected may happen any time .When you must go back to a important short letter on a overcast day, but you