The main function
1. 61 a piano keyboard
2. 61 a keyboard drum
3. timbre 249 species
4. rhythm 249 species
5. state memory function
6. synchronization, into between played function
7. beat device, moved adjustable function
8. prelude/tail played function
9. recording, put sound function
10.programming, playback function
11.single refers to chords, more refers to chords, and bass chords
12. double keyboard, extended sound, vibrato function
13.rotating type total volume
14.rhythm volume, chords volume
15.rhythm speed control
16.three species teaching function
17.The built-in MP3 player
18. support USB external Bluetooth audio receiver