New Magnifier Lamp 5X. This is a new 5X black, illuminated swing arm magnifier with clamp on base. The powerful magnification may help to reduce eye strain. The lens measures approximately 4" (102 mm) in diameter. It is convenient for your home or office and enlarges fine print in books, maps, newspapers, directories, legal documents, etc. It is ideal for reading assistance in low-light conditions 118-120V 60Hz. Uses 60 watt bulb (not included). The swing arm measures approximately 32" (81 cm) long.