Product Description Features: 1. Optical Imaging Principle: The image is not projected onto the paper, but rather projected onto the paper through a lens, thus creating the image on the paper. The touchpad has two sides with different projection effects; please use the front side. 2. Supports Mobile Phones and Tablets: The stand has two splicing methods, making assembly simple and quick, and supports most mobile phones and tablets. 3. Smart APP: You can download "Pencil Sketch" or other related software on your mobile phone or tablet, select your favorite image, and convert it into a sketch to start drawing. 4. The lens is made of high-quality PC material, which is tough and not easily broken. No printing is required, making it environmentally friendly and energy-saving. 5. This tracking board set helps develop hand-eye coordination and basic drawing skills without causing eye damage. Specifications: Material: PC; Size: 20*15 cm; Tip: Please remove the protective film on the projection board before use. Package List: 1*Projection Drawing Board; 5*Stand Accessories