Functions as 110 lumen bicycle headlight or 30 lumen tail light 8 headlight and 8 tail light lighting modes engineered for use on roads and commuting Built-in Enhanced Cycling Optics™ expands your field of vision with an 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 90 hours Built-in 24/7 Safety Technology® gives you a powerful selection of 8 night and day modes (Headlight mode: Boost, High, Medium, Low,SteadyPulse® Low, SteadyPulse® High, DayLightning® Triple Flash, DayLightning® Single Flash / Tail light mode: High, Group, Single Flash-Day,Triple Flash-Day, SteadyPulse® -Day, Single Flash-Night, Triple Flash-Night, SteadyPulse® -Night) SteadyPulse® mode alerts motorists with attention grabbing pulses while its overlapping steady beam constantly lights your way at night 30g 
