It Made of silicone,easy to carry,waterproof, foldable,anytime and anywhere you can play it. Standard 61 Simulation Keys,Sustain function, Vibration function, 10 Demo Songs,100 tone colors,100 rhythms,8 drum sets, Record&Replay,Single/Finger Chords/Fill-in, 16-stage volume adjustable,32-stage tempo speed, You can plug in headphones into the headphone jack and listen to your playing through your ...