This Bubble Guppies Sound Book comes with an attached seven-button audio module that enables children to add sound effects to a story adapted from the Nickelodeon Bubble Guppies television show. The book is designed for children ages 18 months and older. The book’s coated board pages stand up to repeated use. Also, the format of this book conforms to the specifications for toy safety of ASTM F963-08. Three replaceable long-life AG-13 button cell batteries that power the sound module are included.