BBN CENTRAL 800 FRONT LIGHT. Meets ANSI FL-1 Standard. This standard was created by the American National Standards Institute (ANSI) to provide consistent performance measurements for handheld lights. Although bicycle lights are not required to follow this or any standard, Blackburn believes in offering full transparency in how the output, run time, water resistance and other performance claims are measured. LED Fuel Gauge/Charge Indicator. A small built in LED light indicates the battery level. Green = 75%, Orange = 75-25%, Red = 25%. Dual Beam Pattern. Dual beam pattern allows crystal clear near and far visibility. Replaceable Battery. Battery pack can be replaced in seconds. Micro-USB Rechargeable. Charges via any standard USB port. Universal Mount. Action camera style mount, that fits most helmets and handlebars from 22-35mm in diameter.