VicTsing Ultra Slim Extended Battery Case for iPhone 6 6S with 3100mAh Capacity The powerful 3100mAh Li-polymer rechargeable battery can effectively provide 125%+ extra battery life to your iPhone 6, which is equivalent to add about 16 hours talk time or 18 hours web browsing time 360 Protective bumper design and hard-shell backplate for iphone 6 4.7", 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 that you can sync your iPhone to a computer without having to take the battery case off, saving $100+ on keeping multiple apple cables. Simultaneously charge your iPhone and battery case together with the included micoUSB cable The battery case provides an exceptional user experience that features: 17*11*3cm Slim design, and LED battery life indicator, and seamless cutouts to all ports and buttons, also works with iOS8 and all future updates 45 days money-back and 12-month, worry-free Guarantee! All this power case were tested under strict quality control standards. Internally installed UL A+ battery and CE, FCC and ROHS certified