... , synchronous lyrics display function, multiple EQ options,3D virtual sound field, surround sound effect and play mode options. Music can keep playing while ... SD card to expand capacity.ItemDescriptionModelA330CPU400MHzRam64MBCapacity4GBInternal Wireless ReceiverInternal 2.4GHz Receiver Module, support 2.4GHz wireless controllerController DesignCross direction buttons 、A ...