Amazon.com description: Product Description: The Sesame Street Potty Time with Elmo comes with a seven-button audio module that enables children to add voices and other sounds to a story about Elmo teaching his doll, Baby David, all about using the potty. The book is recommended for children ages 18 months and older. Icons on the book’s pages match the buttons on the sound module. Children press a button that matches a page to activate sound. They hear words of wisdom from Elmo to Baby David about all aspects of using the potty, including washing hands afterward, and other sound effects, including a flushing toilet. The Sesame Street Potty Time with Elmo has coated, board pages that resist rips and tears, and wipe clean of spills. The book conforms to the toy safety requirements of ASTM F963-08. Three replaceable AG-13 button cell batteries that power the sound module are included.