The Illuminated hand-held magnifier from Carson is a 4x aspheric magnifier. Aspheric lens magnifiers allow for increased magnification and image clarity while greatly reducing edge to edge distortions. It's 3.0” crystal-clear acrylic lens allows it to be lightweight enough to use for everyday tasks. The illuminated hand-held magnifier is a great low vision aid and assists in reading small print and other low vision needs. It features an ultra bright LED light to brighten your viewing area. It is powered by 3 AAA batteries (not included).