Best Gift for Kids - Four different color light-up track cars can attract kids' attention and bring them joy. Parents can interact with children by choosing a car and engaging in play with three different functions. This helps strengthen family bonds and teaches children about traffic safety through imaginative play. For more details about this track car, view the video at the end of the product images. Safe and Easy to Play - These additional track cars are made from environmentally friendly, non-toxic plastic materials, safe for children. The on/off switch is located at the bottom, allowing kids to operate the cars independently. Each toy car requires 2 AA batteries (not included). Rechargeable batteries are recommended for cost-effective use. Cool LED Light-Up Track Cars - Each of the four race cars features 5 LED lights that enhance play and appeal to children. Due to the light-up design, the plastic is thinner in areas, so avoid strong impacts with hard objects, walls, or dropping from heights to ensure long-term durability. Fit Most Tracks - These track cars are compatible with most race track sets, including dinosaur-themed tracks, rainbow tracks, and others (inner track width should be at least 2.17 inches). They can also be used on any smooth surface for independent play, encouraging creativity and imagination.