The Clarity lighted hands free full page magnifier is a first quality fresnel lens magnifier, that has crystal clear optics. The LED light provided has a fully adjustable lamp-head that can flex and turn to shine the light right where you need it. The full page magnifier light will clip-on to your table or the lens. It may also be placed on the top of the table. Takes 3 AAA batteries-Not Included Do not confuse the Clarity Lighted Hands Free Full Page Magnifier with inexpensive magnifying sheets. The lens of the fresnel magnifier is first quality acrylic, that lets you view a bright clear and sharper image A crystal clear bright image makes this hands full page magnifier excellent for reading, hobbies and crafts, assembly, inspection, and computer screen enlargement. Lens Size: 10"x12".Lens Power: 8 Diopters (2X Plus).Sturdy Non-Tilt Base.Lens is adjustable horizontally and vertically.