�Redesigned Content by Teacher】This upgraded set contains 255 cards - 510 sides. 31 topics in total, such as letters, numbers, animals,colors, shapes, family members, transportation, behavior, months, and more. �Easy to Use】 Just insert the card into the reader solt, the reader will read the words and make a simulated sound automatically. �Children's Songs Mode】 Press and hold the volume button for 2 seconds to switch to the children's song mode, which contains 3 children's song about ABC, animals and festival. �Emulated Sound】When you insert an animal card, the reader can not only read the word, but also make sounds that imitate animals. Likewise, when you insert a vehicle card, it will also make simulated vehicle sounds after telling you what vehicle it is. �Make Learning Fun】 Make learning a game, Children's song mode and animal-like sounds will keep the little ones interested. Tested by more than 100 children, they greatly reduced screen time, learning more than 60 minutes a day with this toy.