Function and benefits This drawing projection board uses optical imaging. Through the lens, the image is projected onto the drawing surface, so you can view, copy, and trace the picture directly on your sketch. It is beginner friendly and helps you build accuracy and confidence in your first sketches. Universal compatibility Fits most mobile phones and tablets. Place your device on the sketch pad holder, adjust the angle and the image, and you can project it onto the board. Easy to assemble and set up. Usability Open your favorite photo on your phone, project it onto the drawing surface, and start tracing or sketching right away. Material and durability The projection lens is made of high quality PC material, offering good toughness and resistance to breaking for reliable use. Use scenarios - Tracing portraits or figure studies from photos on a phone or tablet. - Copying design references, logos, or fashion sketches with accurate proportions. - Practicing line work and shading by projecting a reference image and tracing onto paper.