Adopting France Fresnel HD optical technology can enlarge the picture in the mobile phone by 3 times, the picture is clear and realistic, the dynamic feeling is stronger. The product shape is simple, generous, light weight, small size is easy to carry, suitable for a variety of occasions to use indoor, camping, travelling, leisure time. Adopting high-definition magnification optical technology, without power drive, no cost, energy saving and environmental protection. The product structure uses a lot of technology, simple, tight beat, can be suitable for all types of mobile phones. More can be used as a traditional through magnifying glass, because of its magnifying area, more suitable for the middle and old people to read books, read newspapers, read news on the Internet. Avoid bright light, keep 1.5-2 metres distance to watch, night use better effect.