... short circuit protection design Product DescriptionFeatures:Portable high capacity digital mobile power, Using the steel calls aluminum ... voltage Specifications:1. suitable : tablet pc, video games, digital camera, DVD, IPOD, IPHONE, IPAD, PDA, MP4,MP5 ... time6. Working temperature:-10-40 degreesPackage Includes:1 * power bank1 * interface4 * USB adapter1 *User manual High quality 4400mAh external ...