The Bausch and Lomb 5x Packette Magnifier provides strong magnification with a large, clear viewing field. The protective case is slightly larger than a pack of matches, clicks open and snaps shut. The case serves as a handle when open; it protects the lens when closed. Lens optics are molded to precision standards. Working distance is 2" (51 mm). For more information as well as questions to answers you may have, check out our Coin Magnifier Info Guide.