The Anker Advantage : Join the 10 million+ powered by America's leading USB charging brand High Capacity : Contains 5000 mAh of power, Enough to provide two charges to an iPhone 6s or at least one to a Galaxy S7 Ultra-Compact : Remarkably small, tubular design slides easily next to your phone in any pocket or bag. Just 10cm tall and 3cm wide 18 months warranty