Nitecore BR25 Bike Light Bright, Diffused Illumination in the Fore The Nitecore BR25 is a state-of-the-art biking flashlight with a distincitve design that reflects its high-performance features. What stands out is the extended lens hood, which shifts air flow up and over the flashlight for enhanced aerodynamics. On the underside of this lens hood, a white light diffuser spreads illumination over a long distance of more than 500 feet on turbo power mode. Typically, your biggest blind spot as a cyclist is the immediate area in front of your tire, but with the BR25 a concentrated spotlight will help you see obstructions such as debris in the roadway to avoid a potential accident. Triple Fuel Sources & Damage Resistances The BR25 is capable of up to 60 hours of runtime with power supplied by a USB-C rechargeable 21700 battery. Alternatively, use the included battery magazine adapter to load the BR25 with one 18650 or a pair of primary or rechargeable CR123s. Cyclists can rely on the BR25 to be prepared for high-endurance outdoor demands. This light's environmental defenses include resistance to rain, Advanced Temperature Regulation, and protection from impacts more than 3ft in height.