PRODUCT SPECIFICATION:This head band magnifier has 3X, 4X, 5X, 6X, 7X, 10X different magnifications, it can be combined into 21 kinds of combinations. The focal length of the lens is 20-166mm, please refer to the instruction manual for the focal length corresponding to each magnification WIDE APPLICATION:This magnifying glass is a head wearing magnifier, it is suitable for close up work like precision parts detection and watch repairing PRODUCT FEATURES:This LED magnifying glass comes with one box of replaceable lens with different magnifications: 3X, 4X, 5X, 6X, 7X, 10X, meet your different demands PRODUCT DESCRIPTION:This lighted headband magnifier has two LEDs with interchangeable cold and warm lights, fully illuminating the viewing area for easy recognition ADVANTAGE:This illuminated repair magnifying is a hands magnifying glass, bracket and headband are interchangeable for ensuring more comfortable and tight wearing