1. Due to the unique design, the magnifying screen will not slip off. It prevents fatigue and radiation, even if you watch movies all day long.2. Suitable for all cell phones, etc. Can also be used as a cell phone stand. Plexiglass screen makes the viewing effect clearer and more three-dimensional. It is always a very creative and fashionable gift for your friends and family. Designed for the elderly, children and movie enthusiasts.3. 3-4 times distance allows you to adjust the viewing distance according to the screen size. Recommended distance is 0.5 to 2 meters. It can be watched alone or with friends and family, and you can sit or stop to use it regardless of your height.4. No batteries are required and the portable size is perfect for transportation. You can use it at home, while traveling or on business trips. It is also perfect for children to watch cartoons, easy to use, and protects children's eyes from radiation.5. Note: The best viewing distance for the amplifier is 1.5 to 2 meters. Turn the brightness of your cell phone screen to the brightest.