Interchangeable 2×Lens slots Design: 5 interchangeable lenses with 1.0X, 1.5X, 2.0X, 2.5X, 3.5X magnification, Multi lenses(1x to 6x) to meet your different tasks. It's for professional jewelry loupe, repair, electricians, Sewing, Crafts, Hobbies, Repair or as general reading aid. Lenses: Made of shatterproof crystal clear magnifying acrylic lens designed, high definition, light weight. Ideal for people with low vision, hobbyists and professionals. Adjustable Hands Headband: Headband magnifying glasses has a rotary button design that can be used to adjust the size of the headband and is suitable for anyone. By rotating the button, you can adjust to the size that best suits your head shape, avoiding too big or too small. Detachable Head Lamp: head light with 2 has the function of disassembling and adjusting the direction of illumination. When , it can adjust the illumination direction of for more precise illuminating angle. The lighting unit can be taken down as an independent handheld flashlight for daily or outdoor exploring.Powered by 3 AAA batteries(Not ). Perfect for elderly, jewelry work, repairing, electricians, soldering, repair, painting, dentists, arts & crafts, sewing or as general reading aid. Ideal for people with low vision, hobbyists and professionals.