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Feature:
1. Principle of optical imaging: Lens imaging is not a projection, but observation through a lens, you can see the image on the canvas.
2. Material: Optical coated polymethyl methacrylate lens ABS plastic, durable.
3. Support for mobile phones and tablets - you need to download the optical drawing application, put the phone on the shelf, and then you can start drawing without the need for drawing skills.
4. Education: Help develop hand-eye coordination and basic drawing skills.
