M-4+ Large High Power 4x double lens 4" Inch lighted magnifier. This is the largest most powerful handheld magnifier we are aware of anywhere. The high power is achieved through out unique double lens design. The second lens easily snaps on to the other lens. The Wide field of view and 4x Magnified view makes this an ideal reading and inspection and scanning magnifier for industrial applications, illumination assists with low light conditions and increased contrast. (Available with optional super led 70 lumens super illumination bulb) This is also useful for those with early to mid stage AMD Macular Degeneration. This is our best seller for Macular Degeneration.Available in Black or White, please specify color below. Uses/requires two "C" batteries *We recommend only using high quality batteries such as Duracell, Energizer, etc. Made in USA