This versatile LED clip-on light is compact at 2 1/8" x 2 1/2" x 3/4", making it perfect for various uses. Designed with a swiveling head and a blue-tinted bulb, it provides effective illumination wherever you need it. The light easily clips onto books, visors, seat belts, hats, or any other surface. Batteries are included for immediate use. Each item is packaged in clam shell packaging with a convenient hanging hole.