With its 900-lumen brightness the Petzl Swift RL rechargeable headlamp is a very powerful compact headlamp. Using Reactive Lighting technology, a sensor analyzes the ambient light and automatically adjusts brightness to your needs, thus reducing handling. It features a two-part construction headband that provides excellent stability in dynamic and intense activities such as mountaineering, trail running and skiing. The detachable and washable headband features reflective components on the rear to make the user visible in low light conditions. Also, the lamp can be tilted upward to see ahead when worn around the neck. Intuitive to use, the Swift RL lamp has a single button for easy control of all functions. Rechargeable, it possesses a five-level gauge for precise monitoring of the battery charge level.