Premium material and power The LED light clip for glasses is made of ABS material and is powered by two CR2032 button batteries. It features one high-brightness LED with long service life and a bright beam in a compact, novel design. Eye protection and portability A convex light barrier on the side blocks stray light from reaching your eyes. This compact, super bright LED clip-on mini reading light is lightweight and easy to carry. Hands-free, flexible design Clip-on design that is flexible and adjustable. You can attach it to the sides of glasses or to a hat brim for comfort and to free your hands. Simple to use and reliable Easy to use, compact and lightweight with good maneuverability. The LED light direction stays aligned with your view no matter how your posture changes. Use scenarios - Reading in bed, on a plane, or on a train. - Detail work such as electronics, crafts, or drawings where both hands are needed. - Nighttime outdoor activities, map reading, or camping where a focused beam is required without holding a light.