Interchangeable 2×Lens Slots: 5 interchangeable lenses with 1.0X, 1.5X, 2.0X, 2.5X, 3.5X magnification, multiple lenses (1x to 6x) to meet your various tasks. It is for professional jewelers, watch repair, electricians, sewing, crafts, hobbies, repairs, or as a general reading aid. Lenses: Made of shatterproof crystal clear magnifying acrylic lens, high-definition, lightweight. Ideal for people with low vision, hobbyists, and professionals. Adjustable Hands-Free Headband: The headband magnifier has a rotating knob design that can be used to adjust the size of the headband and fits everyone. By turning the knob, you can adjust to the size that best suits your head shape, to avoid it being too large or too small. Detachable LED Headlamp: The 2-LED LED headlamp has the function of disassembling and adjusting the lighting direction. When in use, it can adjust the direction of the LED lighting for a more precise lighting angle. The lighting unit can be removed as an independent handheld flashlight for daily or outdoor exploration. Powered by 3 AAA batteries (not included). Perfect for seniors, jewelry work, repairs, electricians, soldering, watch repair, painting, dentists, arts and crafts, sewing, or as a general reading aid. Ideal for people with low vision, hobbyists, and professionals.