The magnifier adopts high-definition optical lens material, and the wooden frame bracket is environmentally friendly, which can adjust multiple viewing angles. You can enjoy 3D vision even outside the screen, effectively prevent cell phone radiation from harming the human body Product name: notebook magnifier and mobile phone screen magnifier, material: wood, imported ultra-clear optical lens Features: high-definition magnifying screen, anti-blue light, away from radiation Screen Magnifier Size: 21 magnifying glasses for laptops and mobile screens measure a total length of 19 (50 cm) and a total height of 14.3 (36.5 cm). The screen is 19.3 inches long and 10.5 inches highThis phone computer screen magnifier is the perfect holiday gift for family, friends, lovers, movie lovers and gaming buddiesFatige-free viewing angle: The ergonomic design of the desktop video amplifier can adjust the desk angle, adapt to different viewing angles of the lapto This phone computer screen magnifier is the perfect holiday gift for family, friends, lovers, movie lovers and gaming friends Fatigue Free Viewing Angle: The ergonomic design of the desktop video amplifier can adjust the desk angle, adjust to different viewing angles of laptop, adjust to the most suitable angle for you, reduce the fatigue of watching movies and work games for a long time, so you can put most of your work and movies in a comfortable position on the sofa or bed. Screen amplifier suitable for online classes, playing the piano to boost scores and watch TV shows at home on iPad