🚗 Drive Your Imagination Wild! Get started quickly with straightforward assembly instructions. Show off your engineering skills with a sleek, see-through chassis. Equipped with 4 line tachometer encoders for accurate speed tracking. Requires 4 AA batteries for endless fun and learning. Build and customize your own smart car chassis! 4-AA-L battery box 4x yellow wheels 4x DC gear motors The Reland Sun4WD Robot Motor Smart Car Chassis Kit is a versatile and engaging platform for aspiring engineers and hobbyists. Featuring a transparent chassis, 4 DC gear motors, and speed encoders, this kit allows for hands-on learning and creativity in robotics. Perfect for educational projects or personal exploration, it requires assembly and 4 AA batteries to power your innovative designs.