61 keys piano keyboard instrument Meterail:silicone,waterproof / foldable 100Tones 100 Rhythms 10 Demo CE,FCC,RoHS NW:1160g Standard 61 Simulation Keys,Sustain function, Vibration function, 10 Demo Songs,100 tonecolors,100 rhythms,8 drum sets, Record&Replay,Single/Finger Chords/Fill-in, 16-stage volumeadjustable,32-stage tempo speed, Good Keyboards for Learning the Piano.Are you an experienced ...