Carson's RM-77 hand held magnifier is designed with comfort in mind. Its ergonomic, soft-grip handle promotes a natural hand position while featuring a 4.7" x 2.7" acrylic crystal clear, rimless, magnifying lens. Enjoy a wide, distortion-free viewing area eg 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. At Carson, we strive to make sure our customers are 100 satisfied with the quality of our magnifiers. We are so confident in our magnifiers that we back them with a Lifetime Limited Warranty! Carson will repair or replace your magnifier if it is found to have manufacturing defects in materials or workmanship. Please contact Carson for additional warranty details.3 389 1.5V Button Cell Batteries (Included). LED Lighted Weight: 5.6 oz. Product Dimensions: 9.25 inch x 4.0 inch x 1.0 inch. Magnification: 2x Lens Size: 4.7 inch (120mm) x 2.7 inch (70mm). Included with a Soft Pouch to protect the lens. Ergonomically Designed with Soft Grip Rubber Handle and Crystal Clear Acrylic Lens.