5 Interchangeable Lenses: Multiple lens choices (1x/1.5x/2x/2.5x/3.5x) to meet your different needs. Hands-free magnifying glass ideal for watchmakers, dentists, electricians, modelers, hobbyists, craftsmen. 【2 LED Headlamp】 - The glasses also have a lamp with 2 LEDs, which is powered by 3 AAA batteries (not included due to shipping safety). Lightweight enough to work in the dark or low light conditions. Headset Design with Strap: The glasses holder can be changed to a headband (included) to prevent falling off and reduce pressure on the bridge of the nose for longer use, reducing fatigue. More Comfortable to Use: Stylish, comfortable and lightweight ergonomic frame with soft padding suitable for all head sizes to fit your reading glasses. The headband can not only be adjusted to fit to all head sizes, but ensures a more comfortable and tight fit. Widely Used: Magnifying Glass Headset with Lamp, perfect for detailed models and painting, crafts, magnifying glass, engraving, sewing,