Handheld LED Magnifier, Power 10X, Diopter 38D, Focal Distance 1.05 in, Lens Diameter 35 mm, Battery Size AA, Case Plastic, Features Hand-Held Magnifiers, Bright LED Illumination, Ergonomic Handle, For Use With -, Includes (2) AA Batteries, Small Snap-on Filters, Protective Case, Lens Aspheric