• percussion instrument:crawling, interest training, parent- communication, emotion, sensory, intelligence development, hands-on brain, hearing, interactive , grasping, hand-eye coordination, other ability training, vision,musical instrument
• Musical instrument :this product can be given as a great present for your friends and families they will ,knock on the piano
• Knock on the piano:sounds very melodious when you , and each piece of voice is different,musical instrument
• Xylophone :this product can accompany and increase parent- interaction,musical instrument
• Eight-tone knock on the piano:lovely design with bright colors will attract attention and their recognition ability,musical instrument