This LED lighted dome magnifier contains a 3x power magnification with a crystal clear and scratch-resistant glass lens. The glass lens diameter is 2-3/4 in. The MagniTouch features a built-in twist action, adjustable focusing ring. This stand magnifier is LED lighted with 3 super bright lights. What makes this magnifying loupe extra unique is that the LED lights are touch-activated! It is the ideal lighted dome magnifier for reading, low vision, hobbies, crafts, examining coins, currency, stamps, Inspection, print, film, electronics,print, plants, rocks, wildlife, nature and so much more! Carson strives to make sure its customers are 100% satisfied with the quality of their magnifiers. They are backed with a Lifetime Limited Warranty!. Lighted dome magnifier for reading, low vision, hobbies, crafts, examining coins, currency, stamps, Inspection, print, film, electronics,print, plants, rocks, wildlife, nature and so much more. DIM: 2. 8" x 3. 6" x 3. 6". 3x power. Includes storage pouch, lens cloth & 2 CR2016 button cell batteries. Crystal clear, scratch-resistant glass lens. Lighted with 3 super bright LEDs. Touch activated, focusable magnifying stand loupe. Built-in twist action focusing ring. Carson's MagniTouch Touch Activated Magnifier is a touch-activated focusable magnifying stand loupe.