Features All Optical Acrylic: The dome magnifying glass is made of transparent all optical acrylic material, which has good transparency and strong weather resistance. Specifications: The magnifying glass is a hemispherical shape, with a size of 93x61mm, 4X magnification (related to photographic distance and focal length). Good Performance: This hemispherical magnifying glass can provide realistic clarity, resolution, and color, suitable for parents and the elderly to use. Easy Operation: Simply place the magnifier on a newspaper, magazine, map, or book, and then slide it to read, making it convenient and practical. Multiple Usages: This optical magnifier can also be used as a paperweight or exquisite desktop decoration, suitable for home, study room, office, etc. Specification: Item Type: Magnifying Glass Product Material: All Optical Acrylic Product Size: Approx. 93 x 61mm / 3.7 x 2.4in (measurement error 2%) Product Magnification: 4X Package List: 1 x Magnifying Glass 1 x Storage Bag Package List 1 x Magnifying Glass 1 x Storage Bag