A book light is a small, portable light designed to illuminate the pages of a book, making it easier to read in low-light conditions. These lights often come with adjustable brightness settings and can be clipped onto the book or stand independently. They are popular among avid readers who enjoy reading at night or in dimly lit spaces. Most book lights use LED technology, which provides bright light while consuming minimal battery power. Some models are rechargeable, while others use replaceable batteries. Many book lights are lightweight and compact, making them convenient for travel or bedtime reading.