Lithium-polymer, micro USB 3.0 input port, micro USB 3.0 output port, LED power indicator lights tell you when fully charged, on off button to start or stop charging, slide in installation, simply pull up on the top of the case, insert phone and slide back tight and your phone is installed.

More: Press the ON/OFF switch to start or stop charging, the charging signal will be shown on the phone screen.  Press the ON/OFF switch once to check the battery level, the lighting indicators will show how much power is left in the charging case.

New in original retail box.