Gently press the sound can be issued, the sound just like the animals baby’ sound . Can DIY toys, placed in the toy inside or inside the shoe, the child will fall in love with this sound. Can also be trained with a small baby's hearing. The size of the product is related to the size of the sound, the greater the product, the greater the sound. Specifications: Material:plastic Color:transparent Size:28/34/40/45/50mm Age for:the kid more than 3 year-old Features: -Small cute, DIY toys essential -Can be used directly, can also be placed in a cotton toys -Can train your baby's hearing Note: Please take care of the kid avoid eating by mistake Package include: 10xToys sound device