The new 3D Pad your children can learn English alphabets easily, improve English pronunciation, and learn English word spelling & pronunciation. It helps to exercise your child's eyesight, hearing ability and knowledge. AA Battery needed to power it. Batteries not included. 50 Keys 3D Pad English Learner 1, 10 numeric keys 10 number keys piano sound Alphabet keys, 26 Letters word. A question can be asked Enhance listening, Good music Manipulative ability, Good cognition, Multifuntional learning, Suitable from 18months+