Make it easier to work on small projects. Functions: The optical lens is characterized by excellent transparency, scratch resistance and is able to provide excellent clarity without distortion. Comes with many interchangeable lenses that provide different types of magnifications, from 1,5x do 3,5x. Keep magnifying glasses on your eyes to see smaller objects in magnification, lightweight and comfortable to wear. Convenient in repairing clocks and watches, jewelry identification and electronics maintenance. Comes with do carrying case, easy do store and carry magnifier. Suitable for professionals, technicians, mechanics, hobbyists, craftsmen and even people who are simply working on projects at home that involve small elements. Specifications: Material: ABS Colour black Magnification time: 1,5X, 2,5X, 3,5X Focal length: 330 mm, 200 mm, 142 mm Product Size: 11,5 * 3,7 cm / 4,52 * 1,45 inch Position Weight: 100g / 3.52oz Package Weight: 247g / 8,71oz List of things do packing: 1 * Magnifying Glasses 1 * do storage case