Etekcity MFI Apple Approved iPhone 4/4S 1450mAh Super Slim Stylish Battery Case Cover Rechargeable Backup External Battery Pack Booster Power Bank, Doubles/Extends Battery Life, Power Indicator LEDs, Standby Mode Button, Camera/Flash/Buttons Accessibility with Screen Protector Protection Film & Cleaning Cloth Rechargeable 1450mAh Li-polymer battery doubles Apple iPhone battery life; Up to 8 extra hours of talk, 10 hours of video, or 255 standby hours per charge! Stylish, durable case provides impact resistance and prevents damage to your phone Allows easy access to all phone buttons, camera/flash, and headphone jack Power indicator lights, Micro USB charging port, and standby button for optimization of battery life Great value -Comes with screen protection film and cleaning cloth