1BUILT?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. 2MULTIFUNCTION: Supports external headphones, you can play any melody you want, or use the recording function to play the music you play. 3HIGH QUALITY: Uses a high quality environmentally friendly silicone keyboard, which is non toxic, wear resistant, soft and durable. 4EDUCATIONAL 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. 5GIFT 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.