Material: Plastic Colour black Size: Length, width and height of the assembly are approx. 10 * 7 * 9.5 cm, length and width of the board approx. 20 * 13.5 cm, error approx. 1 cm Packing list: 1 * Sketch tool [ Principle of optical image]: The image is not projected onto the paper. Through the lens you can see that the image is copied to the drawing paper. The drawing board has two sides, one front and one back. The projection effect from both sides is different. Please use the front. [ Support for mobile phones and tablets]: There are two splice methods for mounts that are easy to install and quick to install and suitable for most mobile phones and tablet computers. [ Environmental protection]: The lens blade is made of high-quality plastic, is well tough and not easy to break. You do not need to print images to save environmental protection and energy. [ Ideal positioning tool]: With the positioning board kit you can improve hand-eye coordination and basic drawing skills without hurting your eyes. They can draw on paper, clothing, bags, etc. It is suitable for children, children, students, adults, beginners, anime lovers and amateur painters.