Black Rechargeable 3200mAh Backup Battery Hard Shell Power Case Flip Cover Stand For Samsung Galaxy S4 S IV i9500 Compatible with Samsung Galaxy S4 i9500 ONLY. Accessory only, 3rd party product, S4 phone NOT included, 1 User Manual included. Combines rechargeable back up battery with complete protection. Built-in rechargeable lithium-ion battery with 3200mAh capacity doubles the battery life. 1 pc hard back cover shell case with rubberized coating finish, built-in kickstand on the back. 4 LED Light Battery Status Indicator at the bottom. No signal interference. Installation: Please pull the upper part of the back cover up, put the phone in, then push the upper part back down.