UNIQUE TRANSPARENT DESIGN This Transparent Children's Toy Bus Can see the gears inside, helping children understand the mechanical concept early. Improve children's observation skills. Transparent Mechanical Gear Toy Bus with Clear shell, and you can see through the rotating gears in it. This toy Bus uses a transparent body design, you can see the gears and simple letters & numbers inside, helping children understand the mechanical concept earlier and improve children's observation ability. SOFT LIGHTS & DYNAMIC MUSIC Turn on the light and music switch, the Bus will emit attractive cool lights, and play dynamic music to make the baby follow him TRANSPARENT BODY This Transparent Children's Toy Bus 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. Easy To Play The Baby Bus Toy has a Bump and Go Action Engine. It drives on its own and when it hits a barrier it will automatically change its direction. It will perform continuously without getting stuck with anything, There is a button control on the bottom of the body with three gears, 1st button off, 2nd button lights only, 3rd button lights on, and the Bus runs PRE-SCHOOL EDUCATION The numbers and letters of the internal structure of the toy Bus can stimulate children's cognition and allow children to learn in play.