Carson Optical CL-65 Handheld Magnifiers; Mount Type: Stand; Maximum Magnification: 3.5x; Number Of Magnification Levels: 2; Lens Shape: Round; Focal Distance: 3.9 in; Lens Diameter: 4.27 in; Focal Distance (Inch): 3.9 in; Lens Diameter (mm): 4.27 in