1、BUILT‑IN SPEAKER: This rolling piano keyboard has built‑in speaker, and the sound is soft and crisp,and the vivid sound makes you feel like a real piano. 2、MULTIFUNCTION: Supports external headphones, you can play any melody you want, or use the recording function to play the music you play. 3、HIGH QUALITY: Uses a high quality environmentally friendly silicone keyboard, which is non toxic, wear resistant, soft and durable. 4、EDUCATIONAL TOYS: The piano keyboard is a good playing toy, suitable for children over 3 years old, more attractive to children, small in size and easy to carry. 5、GIFT FOR CHILDREN: Can also be given as a special gift to children, friends or family. It is also a good gift for birthdays, Christmas and visits.