3 LENSES & 6 MAGNIFICATIONS: There are two lens slots in the head mount magnifier. You can insert one or two different magnifying lenses into the slot at a time. The headband magnifier has 3 replaceable magnifiers including 1.5x, 2.0x, 2.5x. Higher magnification can be created by combining two lenses together. (3.5x, 4.0x, 4.5x). .RECHARGEABLE & BUILT-IN LIGHT: The rechargeable magnifier via USB (included), can be fully charged quickly. The built-in light of the magnifier has 2 brightness levels, which can provide you with brighter and clearer visual effects. You can adjust the lighting angle according to your needs thanks to the rotatable LED light. .FLIP-UP & COMFORTABLE DESIGN: The magnifying glass has a soft nose pad and is comfortable to wear. The non-slip frame of the magnifying glass saves you from worrying about slipping off. When the dual-lens combination is not required, you can easily flip the front lens up thanks to the flip-up design. .STORAGE BOX & 5H HARDNESS LENS: The storage box and bag can store the lens and magnifying glass and prevent it from being worn and scratched. The surface hardness of the lens reaches a 5H level, ensuring wear resistance and durability. .WIDE APPLICATION: The hands-free headband eyeglasses magnifier can be used for different purposes: watch repairing, reading, arts crafts hobby, sewing, jewelry making, painting, observing, soldering. Any questions, please contact us.