GRANDEY Magnifying Resin Lupa 10X 15X 20X 25X Eye Jewelry Watch Repair Magnifier Glasses with 2 LED Lights New Loupe Microscope 4 Pairs of replaceable lens included, with different magnifications (10X, 15X, 20X, 25X), can be interchanged quickly; Too high magnification can not to reading books Left right double eye patches magnifierloupe with adjustable LED to help work in low-light conditions ( Battery Included) Eye patches can be moved leftwards and rightwards, and can rotate 180 degrees upwards and downwards. Material: durable hard ABS plastic and optical lens, Color: mainly black Great for collections, circuits, jewelers and watch inspection, and etc. Can be used for simple eye and both eyes, short focal distance from lens to product is 0.2-2in (0.5-5cm), just like the principle of microscope