The F2 Mobile Phone 3D Screen Magnifier 3D Video Screen Amplifier as a folding design. suitable for indoors, camping, travel, and leisure, etc.The enlarged screen of the Mobile Screen magnifier amplifier make movies, Birthday/Wedding Videos in 3D more enjoyable. HD amplification without power supply, save cost and power, a great environmental products.Use HD amplification optical technology,no power-driven, no-cost, energy-saving and environmental protection. Simple, compact, and suitable for all kinds of mobile phone. Use as a traditional magnifier, magnify its large area, more suitable for the elderly read books, read newspapers, read the news online.Reduce the eyes fatigue when you watch videos on the phone. Folding design, small volume, convenient carrying on business travel.