Beautiful robot toy: This magical robot toy has a unique design and can move according to the black lines drawn on the paper. You only need to draw a black line into the empty area, and you can enjoy the fun of moving along the line! Make drawing more interesting: the intelligent handwriting robot uses its sensor functions and optical sensor functions to track all black lines that are not too thin or too thick and then move. Let the robot make your child fun Easy to use: This means that you draw a thick line with a thickness of at least 0.3 inches. Place the excavator on the drawn line and it will automatically drive on the line. Note that the black line should not be too thin, otherwise the robot will easily run out of the track. Educational toy for children: This toy can help children develop critical thinking and motor skills, promote creativity and curiosity, promote interest in science and technology and promote children's thinking development. Portable and Lightweight Size suitable for travel, easy to take with you when travelling or travelling. This super fun toy is sure to let your child play for hours. Let your kids be creative and have fun with the smart pen tracking robot! Specifications: Name: follow the drawn line robot toy Material: ABS + electronic components. Robot size: approx. 6 x 6.5 x 9 cm. Package size: approx. 6.5 x 12.5 x 17 cm / 2.56 x 4.92 x 6.69 inches. Battery: Comes with 4 button batteries Playing instructions: 1. Use a normal dark coloured pencil or marker to draw a line on a white sheet of paper. 2. Turn on the button of the robot. 3. Place the robot on the drawn line. 4. The robot is automatically run on the line. 5. When the line is finished, car continues in the direction followed by the previous line. 6. If the line is too thin, the car may differ from the line, please make the line thicker (the line should be a quarter inch thick). Box contents: 1 x robot. 1 x instructions. 4 x key cells. 1 x induction pen