Pinkfong Korean Sing Along Sound Book All the fun in this one Sound Book. Let this be the first book your child reads. Ten magical Korean songs that kids just fall in love with. Colors of Pinking characters are more vivid, bright and engaging - one more reason why your child cant help but keep turning the pages. With the built-in speakers optimized for children's sound sensitivity, our Sound Books deliver a rich and immersive audio experience. Two AAA batteries are included in our Sound Books, securely placed under the cover.