Book comes with a toy cell phone that enables children to listen to messages from Dora as they follow along to a story. The book and cell phone are recommended for children ages 3 years and older.The toy cell phone has nine buttons and a digital screen. When children press a button an image related to the button appears on the screen. Kids know when to press the right buttons by matching them to picture icons in the book. Nickelodeon Dora the Explorer: Hola! Its Dora 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 AAA batteries that power the toy cell phone are included.