Headband Magnifiers are hands-free binocular magnifiers that are worn on the head and allow for unrestricted use of both hands while seeing under magnification. When doing precision work this enhanced view with assorted magnification, can greatly reduce work time, frustration, eye strain, while increasing efficiency precision, and work product . Most Headband Magnifier models have the ability to provide multiple levels of magnification to suit just about any task or requirement, they also have adjustable headband designs to allow a comfortable fit with any head size. Technicians, Jewelers, Watchmakers, Machinists, hobbyists, assemblers, and industrial factories, all use and require headband magnifiers on a daily basis to assist them with close precision work. The ability to have both hands free, and see an accurate clear and magnified 3 dimensional view, can cut down the task time to a fraction of what it would without a Headband Magnifier. Different Magnifications allow for different working distances, as magnification goes up working distance (distance from the lens to the object) goes down. The maximum magnification for binocular (both eye ) Vision is 3.5x, some Headband Magnifier models do you have an extra swivel jewelers loupe on one eye for extra magnification. This swivel eye loupe allows for increased vision in one eye for much higher power close detail work, and easily swivels out the way. Most Visor Style headband Magnifiers can be worn over prescription or safety glasses. Headband Magnifiers are precision magnification tools and make a great gift for the professional, hobbyist, needle worker, fly-fishing , artist, collector craftsman and just for reading.