Petzl SWIFT RL HeadlampCompact, very powerful and rechargeable headlamp featuring REACTIVE LIGHTING technology. 900 lumens. With its 900 lumen brightness and total weight of only 100 g, SWIFT RL is the most powerful of the Petzl compact headlamps. With its REACTIVE LIGHTING technology, a sensor analyzes the ambient light and automatically adjusts brightness to user requirements. The headband is reflective for night visibility. Its two part construction provides excellent