reg, Book Light provides a bright light designed for enhanced vision. The warm white LED provides excellent contrast and a more natural reading condition. With warm color temperature, the book light is also a perfect companion for nighttime reading or working. The scientifically designed beam is engineered to provide wide illumination for books and magazines, but is narrow enough not to disrupt others nearby. The handy clip attaches to surfaces up to 0.5 inches (13mm) thick, and the flexible neck allows users to precisely direct the light. Features: Slim design, collapses and locks for easy storage Versatile clip can attach to items less than 0.5inches (13mm) thick Flexible rubber neck allows for endless positioning of the light Convenient slide switch Warm white LED provides excellent contrast and natural reading conditions 25 hour runtime Can illuminate objects up to 4 meters, perfect for reading, household or automotive tasksnn