Lightweight & Powerful Performance: With a 450 maximum lumen output, up to a 104m beam distance, and weighing just 97.2g, the Fenix HL16 head torch is suitable for various activities such as hiking, running, camping, working, or tackling a DIY project Easy Operation: Dual switches allow quick access to 4x white light brightness levels and 2x red light functions, with an adjustable lighting angle of up to 60° and built-in electronic lockout to prevent accidental activation Versatile Power Options: Operates with 3 x AAA alkaline batteries (included), with the option to use AAA Ni-Mh rechargeable batteries for cost-effective operation Comfortable and Adjustable Headband: The 36mm perforated headband is lightweight, breathable, adjustable for a secure fit, and easily detachable for cleaning Durable Construction: Made from high-strength polycarbonate with an internal aluminium heat sink, this headlamp is IP66 rated for dust and water resistance Extended Runtime: Provides up to 100 hours of maximum runtime on low mode, ensuring long-lasting illumination for extended outdoor adventures and work projects Emergency SOS Function: Built-in SOS mode provides emergency signaling capability, enhancing safety during outdoor activities and unexpected situations