Rated Portable Phone Charger- LIFETIME 2500mAh - MOST POWERFUL Rechargeable Power Bank For Mobile Devices - iPhone 6 Plus/6s Plus 5.5 inches. BEST External Battery Pack On The Go (gold) 1,Incredibly Slim : No excessive bulk at the bottom of your iPhone making it harder to hold and reach the upper part of the screen. The iPhone 6/6S charging case is one of the slimmest smart battery case on the market, adding only 0.16 in and 2.47 oz to your iPhone 6/6S, making it convenient enough to fit easily in your hand or in your pocket. 2,Easy To Use : Use your iPhone as your normally would. When your iPhone's battery is low or you need to charge your iPhone, just press and hold the power button on the case. Your iPhone will then start charging. 4 LED indicators on the back of the battery case to indicate how much juice is available to your iPhone. 3,80% Longer Battery Life : The 2500mAh built-in lithium polymer battery can effectively provide almost 80 percent additional battery life to your iPhone 6/6S(5.5''). 4,Updated Version : The extended battery case is made of durable material which helps protect against scratches, fingerprints, smudges and the wear and tear of a life on the go all without interfering with your signal. 5Featuring LightSync Technology : No need to use/buy additional Micro USB cables. You can use your existing lightning cables to charge the battery case and your iPhone simultaneously, as well as sync your iPhone to iTunes without having to remove the battery case.