Description With 900 lumen brightness at only 100 g, SWIFT RL is the most powerful of the Petzl compact headlamps. With REACTIVE LIGHTING technology, a sensor analyzes the ambient light and automatically adjusts the brightness to user requirements. The headband is reflective for night visibility. It has a two-part construction for excellent stability in dynamic and committing activities such as mountaineering, trail running or skiing. SWIFT RL is intuitive, with a single button for easy control over all lamp functions. Rechargeable, it has a five-level gauge for precise monitoring of the battery charge level. Features Ultra-bright and lightweight: 900 lumens at only 100 g. Optimized comfort and burn time:- longer burn time, greater visual comfort and less manual operation with REACTIVE LIGHTING mode: the light sensor automatically adjusts brightness and beam pattern, optimizing battery usage- visual comfort, from the two beam patterns (flood or mixed) giving high-performance lighting for outdoor activities: proximity vision, movement and distance vision- comfortable wear, from the ergonomic adjustable headband with two-part construction (Petzl patent), for optimal stability during dynamic activities- reflective headband for night visibility- Lithium-Ion 2350 mAh battery, rechargeable via the type B micro USB port, with battery charge indicator Intuitive and convenient to use:- ease of use, with a single button providing control over all functions: ON/OFF, lighting modes, brightness and locking- choice of two lighting modes, selected with a long press: REACTIVE LIGHTING or STANDARD LIGHTING- LOCK function to avoid accidentally turning it on during transit or storage, or to lock lighting settings during your activity- five-level gauge for precise monitoring of the battery charge level- headlamp can be tilted upward for seeing ahead when it is worn around the neck.- detachable, washable headband Petzl Swift RL Headlamp