Characteristics: Enlarge the screen to protect your eyes. Br/make the phone screen bigger, the image is stronger. Br/you can magnify the phone screen three times. Br/can be used as a traditional magnifying glass to read books or newspapers. Br/not driven by power, energy saving and environmental protection. Br/reduce eye fatigue in movies and television brought by mobile phones, and a tearful phenomenon. Br /, prevent slipping, it 's falling. Br/fold design, small size, facilitate business travel. Br/specifications: Material: Size of 3d: 7.8 inches color: White, folding dimensions of black products: 18x15 x 1.5cm (Long x wide x thick) Screen size: 8.2 inches: Methods of use: 1。 Br/please avoid using direct sunlight or strong light, avoiding a lack of clarity, show better results in dark light. Br/2. Do not wipe the camera with hard cloth, when not in use, use soft cloth to protect the camera. Br/3. Adjust the distance and angle of mobile phone frame to lens, adjusting focal length, lens angle, to get the best view, optimal amplification effect and optimal clarity. Br/4. Best view angle perpendicular to the camera, the best view distance is 0.5 m. Br/because the camera is larger, slight reflection of mirror surface, please adjust the brightness and angle of light. Br/packing: 1x3d (Not including telephone)