Product Description: 61 Keys Hand Roll Piano - Portable 4D Stereo Surround Sound Keyboard for All Ages Unlock the world of music with our 61 Keys Hand Roll Piano, a versatile and portable instrument designed for musicians of all ages. This innovative roll-up keyboard offers a wide range of features to enhance your musical journey. 61 Keys Standard Piano Experience the full range of a standard piano with 61 keys (A1‑C9). This hand roll piano is perfect for all ages, offering 16 tones and 6 demo songs to inspire creativity and learning. Smart Piano Take your music anywhere with this smart piano. It allows easy recording, editing, and playback, along with sustain, vibrato, teaching, and chord functions. Whether you're a beginner or an experienced player, this piano adapts to your needs. With Speakers Enjoy independent playing with the built-in speaker, or connect via MIDI output to a computer or tablet for expanded functionality. This feature makes it easy to integrate with your digital music setup. Connected Devices The roll-up keyboard supports external speakers or headphones, providing flexibility in how you listen. It offers multi-platform access, allowing you to arrange and mix music across various devices seamlessly. 4D Stereo Surround Sound Immerse yourself in rich, 4D stereo surround sound with deep bass. The electric roll-up piano can be powered by an external USB or 3 AAA batteries, making it perfect for on-the-go music creation. This 61 Keys Hand Roll Piano is the perfect blend of portability and functionality, making it an ideal choice for music enthusiasts of all levels. Whether at home, school, or on the road, this piano offers a comprehensive and engaging musical experience.