SUNWELL 2500mAh Power Bank Case for Apple iPhone 6 6S Battery - Black Almost 120% Longer Battery Life of Sunwell iPhone 6/6s battery case: 2500mAh capacity provides an extra 120 hours standby, 12hours talk time, 8 hours video, 8 hours web browsing or 7 hours gaming to your iPhone 6 / 6s. Incredibly Slim: just 1.5times thickness than your iPhone's battery life without doubling its size (adds only 0.17in & 2.02 oz). Deluxe material let the cover feel great in hand. Sync Transfer and Charge: You can sync your iPhone6/6s to your Macbook, PC or laptop without removing the battery case. 100% compatible with iOS versions, Apple Pay, and future iOS software updates. What You Get: SUNWELL Ultra Slim Battery Case for iPhone 6 / 6s, audio available, you can use your headphone with our iphone 6/6s battery case. Four Lights Show Exactly Power Left: With the smart battery case on, when you click the bottom, there are 4lights to show exactly how much charge you have left.