Safe and Easy to Play - These magic track extra cars are made by environmentally friendly non-toxic plastic materials which are safe for children. For yellow truck the switch is on the top. For the red rescue and blue auto busthe switch are at the bottom. The child can easily use it independently and have fun! Each Toy Car requires 2 AA battery (NOT included).We suggest you to purchase the rechargeable battery to save battery cost. Cool LED Light up Track cars - These three magic cool race track cars feature 5 LED lights that kids will be attracted and enjoy it. But for this light up design plastic has to be thin enough. So these cars had better not hit hard objects or hit walls hard and do not fall from high places to protect them for long-term usage. Manufacturered by Save Unicorn. Fit most Tracks - These magic race track cars compatible with most race track sets including dinosaur toys trackrainbow tracks and so on(the inner width of the track should be at least 2.17 inches). It can also be played on any smooth surface independently to Stimulate children's imagination. 100% Satisfaction service and Free Gift- If you have any questions about our products or the product have damaged during transportation please contact us in time we will exchange for you unconditionally. Add it to cart now you will get a small screwdriver as free gift for your convenience to install the track cars battery. Best Gift for Kids -Three different colour of light up track cars can attract kids attention and make them feel happy. Parents can interact with kids by choosing one of the cars and act as a driver of three different functions. It can not only be enhanced family relationships but also educated children about traffic safety by these track cars.