Feature: 1. Optical Imaging Principle: The picture is not projected onto paper, through the lens sheet, you can see that the picture is imaged on the drawing paper. Tracing board has two sides, front and back, the projection effect of two sides is different, please use the front. You can adjust the brightness of your phone or tablet to the desired effect. 2. No Overlap Shadow and Clear: The lens sheet is made of PC material, good toughness, not easy to break. You do not need to print any pictures and energy saving. Clear imaging on the transparent board, give you a great drawing experience. 3. Support Mobile Phones and Tablets: There are 2 splicing methods for bracket, simple and quick to assemble, support for most mobile phones and tablets. 4. Smart APP: You can download APP for "Pencil Sketch" or other relative software to your mobile phone or tablet, choose your favorite pictures and convert it to a sketch, and then you can start to paint. (Make sure to mirror the image on your mobile phone or tablet before drawing, otherwise you will find that the picture is drawn in the opposite direction.) 5. Ideal Tracing Tool: This tracing board kit is suitable for children, kids, students, adults, beginners, anime enthusiasts, amateur painting enthusiasts. You can paint on paper, clothes, bags and so on, no harm to your eyes. Specification: Specifications: Color: Transparent Material: Plastic Item Size: 20.0 * 13.5cm / 7.9 * 5.3in . Package List: 1 * Lens Sheet 5 * Bracket Parts 1 * User Manual(2 Languages) Note: Make sure to mirror the image on your mobile phone or tablet before drawing, otherwise you will find that the picture is drawn in the opposite direction. The transparent film cannot be torn off, otherwise the projection effect will be affected.(Green film can be removed before use.)