ACCURATE DETECTION: Equipped with energy-saving LED lights, the light is uniform and soft, without flickering, and the brightness is stable, ensuring the accuracy of vision testing. It can be used for both professional vision testing and daily vision screening STABLE POWER SUPPLY: It adopts plug design, plug and play, stable connection, no need to worry about power interruption, and provides continuous and stable power for the vision chart light box, making the vision testing process smoother STURDY STRUCTURE: This vision chart is made of acrylic panel and aluminum alloy frame, with clear fonts and not easy to fade, bringing a long-lasting and clear visual experience, 2.3cm ultra-thin frame, light and portable, saving space EASY INSTALLATION: It adopts wall-mounted installation, and the package comes with installation accessories, which can be easily hung on the wall, saving space and easy to install. It is not only convenient for vision testing, but also adds practical decorative elements to the wall Service: We place great emphasis on our customers' shopping experience. If you have any questions, please feel free to contact us; we will respond to you within 24 hours!