Pretty good for indoor or outdoor activities, this 1800lm Middle Switch White Light Stretchable Headlamp Suit with US AC Adapter & 18650 Batteries will well serve you during camping, trip, climbing, hiking, fishing etc. This headlamp is compatible with bicycle flashlight. Its superb zoomable performance makes it superior to ordinary ones. Designed into stretchable style, it is rather convenient for carrying. With adjustable headband, it will provide ultra comfort and flexibility. Do have a try!