Feature 1If you place the Inductive car toy somewhere else it would run in circles only until it finds the line. 2 The car toy has an optical sensor that reads the black line drawn on a white piece of paper. 3 This is a novelty inductive car, follows the line. 4 The tank powered by 4 x button cell.(Included) 5 Turn on the power switch and the car toy can move atomatically.SpecificationMaterial: Environmental ABS Random color delivery Size: body length: about 7cm Power supply: 4* button cell (included) Ability development: logical thinking, imaginative creation, organizational ability, hand-eye coordination, hands-on ability Steps: 1. Draw lines on white paper and whiteboard. After the toy car opens the switch (the switch is below), it can sense the black line and run along the line. 2. If the line is too thin, the car may run out of the line. When the car runs to the end of the line, the car will continue to move in the final direction. 3. If the direction is wrong, the battery may be reversed. Please reinstall the battery according to the correct method (the side of the battery must touch the spring in the battery box) 4. Do not place the cart under the sun, under fluorescent lights, or on shiny paper to prevent glare from damaging its sensor. Battery installation: Unscrew the battery slot screw with a screwdriver and insert the button battery according to the "+"-" mark (the battery has a word on the side of the iron or spring loaded).Package List1 x Inductive Car Toy 1 x Pen 1 x White paper 4 x Button Battery 1 x Instruction manualNoteDue to the different monitor and light effect,the actual color maybe a slight different from the picture color. Please allow 1-2cm differs due to manual measurement.