The Headlamp is lightweight and very comfortable. It's great for working under the hood of your car or when you're on a hike or a bike ride. The Headlamp is water resistant, rotates 120 degrees vertically, and the LED shines bright at 75 lumens. You'll get 30 hours of light on one full charge. It has a Micro USB port for rapid charging or you can simply use the portable solar panel for off-the-grid charging. The Headlamp measures 2.5" wide and weighs in at only 1.5 oz. It includes a comfortable headband and comes in two colors (Black or Hi-Viz Yellow).