Baby Shark doo doo doo doo doo doo…the Baby Shark Sound Book is here! Pre-programmed with 10 different songs; simply press a button, and the matching tune plays! Built-in speakers Aria Speakers deliver clear sounds that are safe for small ears. Rounded edges and soft buttons give a comfortable and easy grip for little hands! Book can be switched on and off with a safety lock on the back cover, extending battery life! Produced by WowWee for Pinkfong, the official creator of the global hit song Baby Shark! Includes two replaceable AAA batteries.