1. Specifications: Applicable to: children, adults, teachers, home artists 2. Product size: 20.2x13.5 cm 3. Principle of optical image: The image of the lens is not a projection, but is observed through the lens, and the image can be seen on the canvas. 4. Material: Optical ABS coated polymethyl methacrylate lens for durability. 5. Compatible with phones and tablets. You need to download the optical mapping app, place the phone on the shelf, and start drawing without the need for drawing skills. 6. Education: Helps develop eye coordination and basic drawing skills. 7. Product weight: 138g
