150 lumen bicycle headlight 8 headlight and 8 tail light lighting modes for use on roads and commuting Built-in enhanced cycling optics expands your field of vision Extra wide and long range beam compared to typical lighting optics One cubic inch, water resistant design only weighs 30 grams USB rechargeable internal battery lasts up to 24 hours Built-in 24/7 Safety Technology for a selection of 8 night and day modes SteadyPulse mode alerts motorists with attention grabbing pulses DayLightning mode emits 200 lumen flashes during bright daylight Adaptive Flash Technology senses day and night and adjusts accordingly Low battery indicator alerts you when a charge is needed Light mode memory saves the mode you're in before the light is turned off Flexible mount easily adjusts to fit on handlebars, including aerobars Includes micro USB charging cable, flexible mount Designed, engineered, and assembled in the USA since 1991