Key FeaturesMagnification: It typically uses a high-definition Fresnel lens to magnify the phone screen image by 3 to 4 times.Functionality: It acts like a "portable home cinema" by providing a larger, clearer display for watching movies, videos, or gaming without needing batteries or a power source.Health Benefits: It is designed to reduce visual fatigue, radiation exposure, and eye strain caused by staring at small phone screens for extended periods.Portability: These devices feature a lightweight, folding design that makes them easy to carry for travel, camping, or bedside use.