Our clip-on flip-up magnifying readers are made to fit most reading glasses. Magnifying readers are great if you do occasional close-up work. Their main use is with periodic close-up examination, reading, and writing. Easy attachment and removal, superior protection and durability, and customized prescriptions mean convenience, easy pocket storage, and safe, healthy eyes. Features: * Magnification: +2.5 Diopter * Minimum Working Distance: 11.1 Inches * Maximum Working Distance: 15.6 Inches * Style: Clip-On and Flip-Up * Material: Acrylic Dimensions: * Glasses: 5 1/4" W * Lens: 2 3/8" W x 2" H Made in USA. Model: 232250Shipping Weight: 1.1 lbs