Includes the main unit, four manuals, and a power adapter. It has a built-in XG sound source with a MIDI sequencer. All buttons function without issue. Both battery and adapter operation are problem-free. Sound output is fine. MIDI input and output were confirmed. The TO HOST terminal was not tested due to the lack of a cable. The battery terminals are clean (no leakage). The screen is clean with no scratches. The internal battery has been replaced. It's in good condition for its age. There is some paint chipping on the corners of the plastic.