49 Keys Roll Up Piano Foldable Portable Hand Roll Piano with Built-in Loudspeaker for Kids/Adults/Beginners

Built-in 16 kinds of tones, 10 kinds of rhythms, and 6 demos for learning and listening to classics.;Standard 49 keys roll up piano, perfect for kids, adults and beginners.;Multiple functions: one key one note, 16 levels of volume control, 32 levels of speed control, 3 sound effect modes (echo, mixing, ), rhythm editing, recording, etc.;Support external connection of earphones, audio, and microphone input.;Built-in loudspeaker, mellow and melodious sound.;Small and lightweight, foldable and potable, easy to carry it around, play whenever and wherever.