Gemini MS-USB Portable PA System "Powered, mountable 2-way speaker system for any portable application Built-in rechargeable battery with level indicator lasts up to 12 hours Three inputs: Balanced Mic input, Instrument/Mic input, Aux input (Stereo RCA) Link Output Inputs for USB drive and SD card Controls for Search, Loop, Reloop, Repeat and Pitch (buttons & slider) LCD display for easy location of USB and SD card files Master Volume/Individual Gain Control for inputs 1 & 2 Enhanced ba" Built-in rechargeable battery with level indicator lasts up to 12 hours "Three inputs: Balanced Mic input, Instrument/Mic input, Aux input (Stereo RCA)" Link Output Inputs for USB drive and SD card