Get precisely the magnification you need with our unique box set of four lenses (1.7, 2.0, 2.5 and 3.0 X magnification). Simply clip the lightweight frame to your glasses, select the lens and see all the intricate details with needle-sharp clarity. Just flip up the lens for normal viewing. Clip-on Magnifiers for hands-free work. Flip-up lens for easily for normal viewing 4 different lenses included (magnifications 1.7X, 2.0X, 2.5X and 3.0X).