The best headband magnifier we've ever offered. Magnification adjusts from 1.8X to 4.8X and makes tying those small flies easier. Lenses flip down or up in succession, quickly changing the magnification as your work demands. Flip-down loupe provides additional magnification for detail work. Twin beam lights for pinpoint illumination. Adjusts to any head size, and can be worn comfortably over glasses. Take it to your fly fishing camp and tie flies to match what's hatching in comfort. Requires four AAA batteries (not included). Also great for fine jewelry crafters.