TopG Lightning Box 2400 mAh Rechargeable External Battery Case for iPhone 5s & iPhone 5 - MFI Apple Certified [18-Month Warranty] Matte Black Stylish, Slim Design - You will forget you are carrying extra power on the go. LED power indicator for battery power level, on-off power to control when to use the extra power High Capacity 2400mAh built-in battery nearly doubles the battery life of your iPhone 5. Get up to 8 hours of talk time, 10 hours of web browsing time, or 255 hours of standby time Lightning Box can easily sync or charge the iPhone with case on through the included USB cable - MFI Apple Certified Kickstand to prop up phone for video viewing, Changeable frame, On and off power switch.