Specification: Type: Ultra-thin Magnifier Magnification: 3X Material: PVC. Size: 7 × 4.7 inches (length x width). Thickness: 0.5 mm Color: transparent color with black frame Features: -Large size makes it easy to read and view full page details. -3 Magnification to ensure that visually impaired users can comfortably read books, newspapers, maps, etc. - High quality PVC plastic, smooth surface, comfortable to hold, without straining your arms. - Ideal for small solar projects and starting campfires - an important addition to any set of emergency or survival tools. Package includes: 1 x PVC magnifier panel. Notes: - Manual measurement, there may be an error of 1-2mm, please allow a slight error in the size.