A headlamp is a portable light source that you wear on your head, allowing you to keep your hands free while illuminating your surroundings. It typically consists of a light bulb, a battery, and an adjustable strap to secure it in place. Headlamps are popular among outdoor enthusiasts, such as hikers and campers, as they provide bright light for navigating trails or setting up camp at night. These handy devices are also useful for various tasks at home, like fixing plumbing or working in tight spaces. Many headlamps come with different brightness settings and beam angles, making them versatile for activities like caving, fishing, or running in low-light conditions.