Redesigned Content by TeacherThis 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. Emulated SoundWhen 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!