Adjustable Rechargeable LED Lights: 3 LED headlights adjust the lighting direction for a more precise lighting angle. The LED light is detachable, a fully charged battery can run the LED light continuously for 8-12 hours (battery not included). Comfortable to Wear: The inside of the headband is a soft sponge that conforms to the head. The headband adjustment dial can be adjusted to the appropriate size (Pull Fit, Press Lock). Ideal for different head sizes. With two buttons on both sides, you can adjust the height of the magnifying glass. High Definition Lenses: With 5 detachable lenses and 1 small circular auxiliary lens, the magnifying glass is made of acrylic clear, high definition and lightweight, unbreakable. It will not make your head heavy. The small circular auxiliary lens is 360° rotatable. You can combine these 5 lenses with a small circular lens (8X) to get 15 magnifications to meet your different needs. Double slot design: The hands-free magnifying glass is designed with