iOS 8.1.3 & iOS 8 compatible and iOS 7 and iOS 7.1.2 compatible for iPhone 5s iPhone 5 External Battery Charger Power Bank in ultra-compact, sleek design of iPhone 5S iPhone 5 with integrated 2.200mAh POWER Battery Pack Battery Case Cover spare battery PowerPack Cover - Black (Electronics)
Although it is in principle easy to understand, lacking guidance. The note in the phone, it does not work you can ignore. Generally, it is robust, feels good, looks good and does the job - it loads.