1. Easy to use, the screen is not easily deformed. A gift for children, helping to protect their eyes when viewing up close. The gift for the elderly, allowing them to see the screen more clearly. Effectively prevents radiation emitted by mobile phones from harming human eyes. 2. The screen magnifier uses resolution optical lens material, and the wooden frame stand is ecofriendly with adjustable viewing angles. It provides a 3D viewing experience away from the screen, effectively blocking mobile phone radiation from harming the human body. 3. Large 21inch size: A universal screen magnifier for notebooks/tablets/mobile phones. Dimensions: 19.6 x 14.3 inches (50 x 36.5 cm), screen size is 21 inches. 4. Screen magnifier: Utilizes definition optical technology to magnify the phone screen by three times, offering eye protection and antiblue light radiation, with no power consumption. Reduces discomfort and visual fatigue caused by prolonged focus on small screens.