Maxboost [Vivid Power] Battery Case 3100mAh Battery Compatible with iPhone 6 / 6s (4.7 inch) [Certified Parts] Extended Charging iPhone Portable Charger Case - White/Grey Powerful 3100mAh Li-polymer rechargeable battery of the VIVID can effectively provide 125%+ extra battery life for your iPhone 6 / iPhone 6S, which is equivalent to an added 18 + hours talk time or 14+ hours web-browsing time. Protective bumper design and hard-shell backplate provide a comprehensive shield from scratches, bumps, drops and more, while still convenient enough to fit easily in your hand or in your pocket. Featuring sync-through technology, the case allows you to sync to your computer without ever having to remove the case! Additionally, simultaneously charge your iPhone and battery case together with the included micro-USB cable. The elegant, slim design of the VIVID provides an exceptional user experience that features: an LED battery life indicator, Apple Certified design, and seamless cutouts to all ports and buttons. Upgraded - Reinforced Front Bumper. Lifetime warranty by Maxboost ensures the VIVID will last as long as your iPhone 6 / iPhone 6S.