Lenmar BC4 - External Protective Extended Battery Case for iPhone 4 / iPhone 4s Built in 2300mAh battery doubles your iPhone's battery life & stay connected & productive Double your talk, text, and surfing time Stylish two-piece rubberized case LED charge status indicator, displays remaining power in the battery case Charge your phone and case simultaneously Compatible with the iPhone 5 and 5S *Please remove any backside screen protector prior to use as this may cause the case not to fit properly Note: The Meridian is a charging case only Up To 4 Hours Talk Time & Internet Use In 3G Network, 7 Hours In 2G Rechargeable 1,700 mAh Li-poly Battery Fully recharges thru USB to micro USB (cable included) in 3 - 3.5 hours. Syncs your iPhone to iTunes directly. No need to remove the Battery Case Cover design provide complete protection for the iPhone top, bottom sides and corners. Reinforced 2 piece designs latches securely provide easy on and easy off protection On off control to recharge at your discretion. 4 LED charge status indicator