Featuresr this power bank is of exquisite workmanship the surface is water and corrosion resistant and is perfect for everyday user 3000mah large capacity premium li ion battery cells add an extra 3000mah to the battery life of your smartphone tablet or digital camerar support bluetooth 30 it can serve as a remote for photo taking what a great necessity on your journeyr first grade circuit chip protection not only provides protection but also enhances efficiencyr optimized charging