This learning toy can be used to teach little ones learning to talk, expand vocabulary and reinforce sight words in a much more interesting way. Note: The learning cards are readable on both sides, and the two sides have different content. Style 1 and 2 contain 112 learning cards, containing a total of 224 words; style 3 and 4 contain 255 learning cards, containing a total of 510 words. Features: This learning toy includes a card reader and 112\/255pcs flashcards. Learning card content covers a wide range of topics, including animals, transportation, food, fruits, vegetables, colors, shapes, and more. The study cards are double-sided, and each study card contains two different learning content. (Adjust the insertion surface of the learning card to switch the learning content.) The card reader is also designed with a nursery rhyme function. There are 3 nursery rhymes in total. Long press the button of the sound to play the nursery rhyme, and press the sound button once to switch to the next nursery rhyme. Suitable for ages over 4 years to learn sight words, enhance cognitive ability, exercise hearing, and build vocabulary. Easy to operate, the card reader contains two buttons that can be used to repeat playback and adjust the volume. Charged by USB, which is convenient to use. Help autistic to develop speech capability. Can keep away from mobile phones and tablets. Applicable both for home and class. A great gift for birthdays, Christmas, and other holidays for girls and boys ages over 4 years. How to use it: Put the card into the card reader\u2019s slot, and the card reader will pronounce the words. When an animal card or transport card is inserted the card reader will play a real animal or transport\u2019s sound. Press the repeat button to repeat the