1. Six layers of force are adopted to make it closer to the original drum playing. 2. Supports double triggers with edge-hit response. 3. Fifteen sets of drum group and one sets of custom drum group. 4. Number of timbres 195 and GM standard timbre library. (song use) 5. Thirty songs, adjustable GM volume and drum volume .(for learning) 6. Effect: reverberation type 0-5, two-band EQ equalization. 7. Supporting adjustment of sensitivity parameters of drum discs. 8. Speed control: 30-250 beats/minute. 9. Metronome: 9 kinds. 10. Other functions: customize settings, store and restore factory settings. 11. Interpoles: USB MIDI, headphones, audio input, audio output. 12.Carton Size(cm):75*62*18 13.Weight(kg):16