Features: 3 LED headlights can adjust the illumination direction to obtain more precise illumination angle. The inner side of the headband are soft sponge. The headband adjusting wheel can adjust the appropriate size (pull to adjust, press to lock). Perfectly for various sizes of heads. The magnifier are shatterproof clear acrylic lens design, high definition and lightweight. It will not make the heads feel heavy.3 magnifications to meet your different needs:1.5X 2X 8X. The headband magnifiers are suitable for for hobbies, crafts, model building, reading, inspection, soldering, jewelry making and other tasks. Do not place the magnifying glass in the direct sunlight to avoid fire. Do not use the magnifying glass to observe the sun-line so as not to burn your eyes. Please use soft cloth or lens cleaning paper to clean the lens. Specifications: Material:ABS,Metal Multiplication:1.5X 2X 8X Powered by:3xAA Battery(not included) Lens focal length: 43-330mm/1.69''-12.99'' Size:Approx.29.3x21.5x6cm/11.54''x 9''x2.36'' Package Includes: 1x Headband Magnifier note: Please allow 1mm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.