WLG-4.2 Premium 4.2" 3.5x high power LED Lighted reading Magnifier with double lens design and 3.5x Magnification this large powerful magnifier has 18 LED bulbs and 3 Led settings for Ultra bright illumination or warm 2700k illumination for those that are sensitive to white light. Triple light settings allow for wide range of light settings for particular low vision issues and varied environments, ideal magnifier for those that require extra illumination to enhance vision. A classic style magnifying glass with cutting edge double lens design for higher magnification and large lens size , ideal high power reading magnifier and effective for low vision and macular degeneration, also ideal inspection magnifier for inspecting products, printed material, text, parts, coins, etc. Uses 3 “AAA” batteries.