Baby’s First Bumper Book provides soothing and stimulating music and lights. The accordion-fold book includes a friendly light-up face on every page! Faces light up one after the other from left to right in time with the music, encouraging your baby to follow along. The double sided book features simple patterns and images on one side and more advanced graphics on the other for two stages of development. This fun bumper book plays two different melodies, one soothing and the other stimulating, for approximately 10 minutes before switching itself off. For use in a crib, stroller, or on its own on a mat!