With 900 lumens of brightness and weighing only 100 g, the Swift RL is the strongest of the Petzl compact headlamps. The Reactive Lightning technology uses a sensor to analyze ambient light and automatically adjusts the brightness to meet the user's needs. The headband is reflective for night visibility. It has a two-part design that provides excellent stability during dynamic and demanding activities such as climbing, trail running, or skiing. The Swift RL is intuitively operated and features a single button for easy control of all lamp functions. Rechargeable, it has a five-level indicator for precise monitoring of the battery's charge status. Note: Battery is included.