... design Product DescriptionFeatures:Portable high capacity digital mobile power, Using the steel calls aluminum battery,Capacity of ... up to 4400 mAh, using USB output,Power shows: level 5 LED lamp shows power, supervise the state intelligence automatic ... -5 years time6. Working temperature:-10-40 degreesPackage Includes:1 * power bank1 * interface4 * USB adapter1 *User manual High quality 4400mAh ...