Intelligent LCD Display - To clearly show correct keys & chords to press, 8 percussions & 40 demo songs 345 Timbres & 128 Rhythms - 345 timbres to explore versatile instruments; 128 popular rhythms to choose Teaching & Record Function - One Key & Guide for perfect practice; Built-in recorder to keep daily progress Easy Volume Control - 16-grade master volume, 8-grade rhythm volume, tempo/transpose/chord volume/vibrato control Multi-Functional Interfaces - MIDI & speaker output, headphone connection