uNu Power DX External Protective Battery Case for iPhone 5s / iPhone 5 - MFI Apple Certified (Glossy White, Fits All Models iPhone 5S & iPhone 5) The successor of uNus Amazon top selling DX iPhone 4S battery case, with an one-year worry-free warranty from award winning support team. The 2300mAh built-in battery can provide a true 100% boost (equals additional 10 hours talk time). It also features 1A powerful output, integrated charging switch and battery level LED indicators. Coupled with the included bonus screen protector, and protective lip that goes above the screen, the protection offered by the New DX case will never be compromised. DX transforms the charging port from Apple lightning into a commonly seen Micro USB port. One can easily sync or charge the iPhone with case on through the included USB cable. The DX has a thickness of only 15.5mm and it is designed to have cutouts for all function buttons and headphone jack. A free headphone adapter is provided for any 3rd party headphones.