Spigen Essential Volt Pack iPhone 6S Battery Case iPhone 6/6s External Charger Case/Portable Charger MFi Apple Certified Charging Case for iPhone 6 / iPhone 6S 3100 MAH - Black Premium battery case protects & charges your iPhone 6/6s with protective IC circuit to prevent damage and to make sure there's no short-circuiting, over-heating, or over-currents. iPhone 6s Battery Case with interchangeable frames (Black / Jet Black Crystal) Includes auxiliary extender and micro USB charging cable for your convenience. iPhone 6 Battery Case compatible with Apple iPhone 6S/6. LED lights indicate remaining power of battery case. Case can efficiently provide 175% extra battery life to your iPhone 6/6s which is equal to 16+ hours talk time and/or 12+ hours of browsing time.