Choose from four learning screens that advance as your baby grows. Leveled learning allows you to encourage and reward your baby at every stage by choosing from the four learning screens: Classical Connections, Baby Senses, Word Play and Learning Songs. Each learning screen provides your little one with an engaging, age-appropriate way to explore and develop new skills. The system easily transforms as your baby learns and grows, and features a timed setting that plays up to 15 minutes of soothing classical music. Requires 4 "AA" batteries (not included).