Why sound books for toddlers? ✔ Babies and toddlers might not know how to read, but they love stories, drawings, and Music. ✔ Music helps them learn to pronounce new words, exercise the" memory muscle," helps their creativity, and releases endorphins, making them happier, calmer, and relaxed. ✔ Builds fine motor skills, develops cognitive skills, and improves social skills. ✔ Perfect to motivate our young ones to pick up a book early. ✔ Interactive books make Interactive kids.Committed to Quality and Customer Satisfaction ✔ Batteries are included and designed to provide 1 hour and 20 minutes' worth of Music or 300 button presses!