Details With 900 lumen brightness at only 100 g, the Petzl 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. Its two-part construction ensures excellent stability in dynamic and intense activities such as mountaineering, trail running and skiing. The Swift RL is intuitive, with a single button for easy control of all lamp functions. It is rechargeable, with a five-level gauge for precise monitoring of the battery charge level. Lumens 900 lm (ANSI-FL1 Standard) Run Time Reactive Lighting: Max Burn Time: 10-50 h (100 lm) Standard: 5-40 h (300 lm) Max power: 2-30 h (900 lm) Standard Lighting Max Burn Time: 100 h (10 lm) Standard: 5 h ( 200 lm) Max power: 2 h (550 lm) Charge Time 6 h Battery 2350 mAh Lithium-Ion rechargeable battery (included) Details 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 thanks to the mixed beam providing high-performance lighting for outdoor activities: proximity vision, movement and distance vision Comfortable fit, thanks to 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 of all functions: On/Off, lighting modes, brightness and locking Choice of two lighting modes, selected with a long hold: 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 to see ahead when worn around the neck. Detachable, washable headband Certification(s): CE Watertightness: IPX4 (weather-resistant) Weight 100 g Petzl Swift RL Headlamp