This is a 3.5-inch compact, easy to use 2x power magnifier for home, school, or office. Its crystal clear acrylic lens gives you a sharp, distortion-free view. This magnifier has a 4.5x power bifocal lens, which allows you to see even the finest details with ease. It weighs only 3.5 ounces, making it comfortable to use for a long period of time.