There is a small rectangular frame in the lower right corner of the famous children's whole brain development machine. You can see it by unscrewing the screw with a screwdriver.

This early childhood education machine can be regarded as a whole brain development machine for children. It is a multifunctional preschool education machine integrating preschool education, companionship, entertainment and mutual communication. It has a 9-inch screen, which can protect the baby's eyes. As the baby's first early education machine, famous schools are the first choice. If you buy an early education machine, children can learn etiquette and ancient poetry. There is a lot of knowledge in it, which is very suitable for people who are eager to learn new knowledge when they are growing up.