Feature: 1. The principle of optical imaging, the image is not projected on the paper, through the lens paper, you can see the image on the graph. 2. The touchpad has two sides, front and back, and the projection effects on both sides are different, please use the front. 3. The bracket has two connection methods, can be assembled quickly and easily, and supports most mobile phones and tablets. 4. Smart APP, download the relevant software to the mobile phone or tablet, and convert the picture into a sketch, you can start drawing. 5. Made of high‑quality PC material, it has good toughness and is not easy to break, no need to print images, it is environmentally friendly and energy‑saving. 6. The tracking toolkit helps develop hand‑eye coordination and basic drawing skills without causing eye damage. Specification: Item Type: Projection Board Material: Plastic Weight: Approx. 139g / 4.9oz Transparent Board Size: Approx. 20x13.5cm / 7.9x5.3in. Package List: 1 x Projection Board5 x Bracket Note: 1. Please allow 1‑2cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.