[High-speed charging and durable battery]: 2.1A fast charge, 50% faster than before, offering your devices high-speed charging. Smart chip allows energy consumption reduction and high power conversion rate. High-density and large-capacity Li-ion battery offers ultra-high power capacity and strong cycle life [Very safe and stable]:Upgraded built-in smart chip Charging speed increased by 2 times, faster and more stable to auto filter any danger, Fluctuation voltage is converted to Stable voltage. [Accurate power display]:Percentage battery display. Helps you to control the power more accurately, and no longer worry about the exhaustion of power.