Headband LED Magnifier Compatible with Soldering, 5 magnification ratio, 2 LED Light, with replaceable band, it suits more users with different head types. White color, high-end quality, glasses type optical Lens, color box packing, it is good Compatible with soldering, welding, reading and so on, it is also a good gift to old people. Magnifier Description: Item: Headband LED Magnifier Color: White Magnification: 1X 1.5X 2X 2.5X 3.5X Weight: About 342g Size: About 220*145*80mm Material: ABS, Acrylic Optical Lens Battery: 3x AAA Batteries(Not Included) Instructions: Chinese&English Packing: Color Box Feature: Interchangeable Band, Color Box, Glasses Type Optical Lens Function: Reading, Soldering, Welding, etc It is applicable to reading booksinewspapers, drawing pictures, making handicrafts, repairing electronics and appreciating Lowers/potted landscapes etc. Methods and purpose of lens slot focal length adjustment: The min distance between lens and eyes on the slot is 45mm while the max Distance is 65mm. When lens becomes closer to eyes, you may view larger visual range, and vice versa. Compatible with example, the focal length of lens is 333mm when using 1.5 X lens. If the distance between lens and viewed object is less than333mm. the focusing component should move in positive direction. And if the distance and object is more than 333m,the focusing component should move is negative direction. CAUTIONS: Please do not put it under the sun to prevent fire Compatible with safety reasons, please be sure not to view the sun with magnifier Compatible with any dirt on the eyeglasses, please wipe the eyeglasses gently with soft cloth, like eyeglasses cloth Please do not wipe the magnifier with the liquid such as banana oil, alcohol, petrol etc