1.New national standard polymer portable source. 2.Super capacity to solve the problem of no electricity Delicate feel, bring wonderful touch. 3.30000mAh,Lasting endurance.Charge once and last for a week Provide you with plenty of electric energy. 4.Quality assurance We are in action.Safety and quality have always been our focus Lithium ion polymer cell certified. 5.Different from the past Compatible with multiple devices.Safety and quality have always been our focus Lithium ion polymer cell certified. 6.4 LED indicators More intuitive identification.It's easier to know the electricity quantity. Reasonable arrangement of electricity management.0-25% 1lighton25-50% 2lightson50-75% 3lightson75-100% 4lightson.