iPhone 6s Plus Battery Charging Case Kujian External Protective Charger Power Bank for 4000mAh iPhone 6 Plus / iPhone 6s Plus 5.5 Inches (Black) 120%+EXTRA BATTERY LIFE- 4000mAh Li-polymer rechargeable battery case can add up to 60 hrs music banquet,18 hrs talk time and 10 hrs video play time. Get ready for hours of non-stop fun. FULL PROTECTION - Custom designed for your iPhone 6 Plus, 6S Plus, protects it from scratches and other daily wear, tear and bumps. PORTABLE GIFT- Ultra slim design best for traveling or outdoor activities, charged your devices anytime, anywhere. Fashion look and various colors with any outfit, best choice as a gift. SAFETY PROOF- Double battery management chips insure high conversion rate, avoiding over charge or over discharge. Anti-heat, intelligent power-off. Tested to be compatible with IOS 8/9 and following updates. WARRANTY- KUJIAN is committed to 100% satisfaction of our customers, any problem with the product, please don't hesitate to contact with us.