Head Magnifier, Professional Double Lens Head Mounted Magnifier, Jewelry Magnifier, Optical Glass Reading Magnifier with Lens Magnifier - 1,5X, 2X, 2,5X, 3,5X for Repair, Crafting EXPLORE DIFFERENT MAGNIFIERS: With 4 interchangeable/mutually switchable magnifying lenses, 1,5x at 15" / 2,0x focal length at 10" / 2,5x focal length at 7" / 3,5x focal length at 6". SPONGE DESIGN: Soft and lightweight, the breathable sponge inside will make you feel comfortable while working, even if you work and wear it for a long time, it will not put pressure on your head. ADJUSTABLE HEADBAND: The wrist strap increases wearing comfort, two knobs on both sides allow you to adjust the height of the magnifier to fit your desired viewing angle. Easily adapts to the head without discomfort. WIDE APPLICATION: Non-contact, multi-purpose combined lens magnifications meet a variety of application requirements: jewelry making, reading, painting, observation, watchmaking, repair, beading, close-up work, needlework, art work and other hobbies/crafts. A very important visual tool for people dealing with watches, delicate instrumentation and small works. ADJUSTABLE VIEWFINDER: The viewfinder can be tilted up and down as needed, as well as moved when no longer needed. It can be worn on prescription glasses or safety goggles.