Costzon 61-Key Portable Digital Piano, Upgraded Premium Electric Keyboard W/ 128 Rhythm, 128 Tone, Sustain Pedal, MIDI/USB Interface, Power Supply, Bluetooth Function (White)

"Features Rich Interface & Various Buttons: MIDI function allows you to connect computer, smart phone and other intelligent devices to obtain better piano training experience.

128 Rhythms, 128 tones and 20 demos make playing more fascinating.

Moreover, chord, transpose, metronome, drum kit and recording buttons satisfy different playing requirements."