The RM-77, Rectangle Rim Free? handheld magnifier is designed with comfort in mind. Its ergonomic, soft-grip handle promotes a natural hand position. Featuring a 4.7? x 2.7? acrylic crystal clear magnifying lens, you?ll enjoy a wide, distortion-free viewing area easing eye strain over extended periods of reading. A side mount switch allows you to easily turn on the built-in LED for low-light illumination. The wide lens and unique rectangular shape of this magnifier were designed specifically for line by line reading of books, recipes, or your favorite periodicals. The RM-77 packs a wide range of features in to its lightweight, well-balanced design. Great for general use or for those in need of a magnifying lens that?s as easy on the hand as it is on the eye. Three 1.5v batteries are included. Also comes with microfiber pouch to keep your magnifier clean and protected between uses.