5 Interchangeable Lenses - Multi choices of lenses(1.0X/1.5X/2.0X/2.5X/3.5X) to meet your different requirements.Ideal hands free magnifier for watchmakers,dentists,electricians,modelers,hobbyists,crafts workers. 2 LEDs Head Torch - The glasses also has a lamp with 2 LEDs, which is operated with 3x AAA batteries (not included because of shipping security) Light enough to work in the dark or in low light fatigue-free. Headset Design with Strap - The glasses bracket can be changed to headband (included) to avoid falling and reduce the pressure on the bridge of the nose for longer using time, thus reducing fatigue. More Comfortable to Use - Stylish, comfortable, and lightweight ergonomic frame with soft padding suitable for all head sizes to fit over your reading glasses.The headband not only can be adjusted to fit all head sizes but ensure more comfortable and tight wearing. Widely used - Magnifier headset with lamp, perfect for fine detailed model and painting, crafts, jewelry loupe, engraving, sewing, knitting, nail art , eyelash, reading, repairing, or electronic components.