【Long Lifespan and Bright Beam】Clip base light is made of ABS, powered by 2 CR2032 push button batteries, 1 high brightness LED, long lifespan and bright beam 【Simple and useful】Just clip on the hat, simple and useful, strong clips to stay in place, easy to remove if needed. Multifunctional for various uses, such as night fishing, reading, home appliance maintenance, etc. 【Clip-on design】The clip-on reading light is clip-on design. You can usually fix it on the sides of the glasses or the brim of the hat for ultimate convenience and relax your hands. 【Free adjustment to】The lamp can be rotated 360 degrees and you can adjust its lighting angles freely. There is a humanized convex light barrier on the side of the beads which blocks light and affects your eyes