SOFT LIGHTS & DYNAMIC MUSIC Turn on the light and music switch, the Train will emit attractive cool lights, and play dynamic music to make the baby follow him TRANSPARENT BODY This Transparent Children’s Toy Train Can see the gears inside, helping children understand the mechanical concept early. Improve children’s observation skills and develop their imagination. Transparent Mechanical Gear Toy Bus with Clear shell, and you can see through the rotating gears in it. ENCOURAGE CRAWLING The baby musical toys are brightly colored and very attractive to your baby. When the bus is moving, it will attract your baby to chase and crawl. Perfect for babies to develop gross motor skills and learn how to control large muscles which enable walking, running, jumping, and body balance when playing.