MAIN FUNCTION: Can clamp the edge of any style of eyeglass legs. Clip the light on your glasses, convenient for reading at night. LIGHTWEIGHT & 360 Degree Rotation: Small and light, less burden on your glass and enjoy reading comfortably. 360 degree rotation for the clip, great for adjusting the angle of the light. HIGH-END DESIGN: Humanized block to isolate the light and prevent the light from piercing the eye, the surface is very smooth, there is no flaw in the edge, don’t worry about scratching your skin. WIDE APPLICATION: Built-in ultra bright LED lights improve vision in the dark. Ideal for all night reading, work or leisure activities, such as car, bed, plane, camping or places where the light is too dark for reading. Useful tool for camping, outdoor hiking, travel exploration and maintenance workers.