Insert the card into the educational toys with flash cards, one key cycle function, you can repeatedly read and learn, without having to insert the card again. 3.5 x 4.2 inches - perfect handheld size, toddlers can also use independently. This learning toy comes with a built-in rechargeable battery that lasts 6-8 hours and takes only 2.5 hours to fully charge, eliminating the need for frequent charging. The card reader weighs 78 grams and measures 4.5*3.3*0.5 inches with punched rounded corners and a waterproof coating, making it safe for children. Toddler learning cards include 112 cards - 224 pages, ideal learning resource to help children learn alphabets, colors, shapes and identify objects on the cards. The perfect learning toy for children under 9 years old to learn new words, train hearing, expand vocabulary and improve cognitive abilities. The learning flashcard allows children to put down their mobile phones and I-pads. The screen-free design reduces the time for toddlers to touch the screen and takes care of toddlers' eyesight. Perfect option for teaching aids/classroom games/preschool/kindergarten, homeschooling. Baby flashcards support USB charging, auto power off, adjustable volume. A fun way for children to learn their letters and shapes. Great learning toys for toddlers.