Lumen output mode1 – 400lm – 2.00hr mode2 – 250lm – 3.5hr mode3 – 130lm – 6.5hr mode4 – 70lm – 12.00hr fl1 – 40lm – 80.00hr fl2 – 130lm – 25.00hr day fl – 500lm – 40.00hr best features light sensitive auto on off to help you to conserve battery power when the light is not needed waterproof to ipx 4 light memory mode – stay on the same mode even when you turn the light off lumen and run time are tested under ansi fl 1 standard daylight flash mode – making a cyclist more visible during the daytime battery capacity and charging indicator in 1996, we formed and launched our first bike light in the market. The dedication on design, quality and innovation has been continuously driving us to succeed in the market with a diversified product portfolio throughout the years. Our belief is to bring the utmost standard of illumination of bicycle light for cyclists who explore mountains or cities in the dark. Inspiration is always leading us as a team of passionate cyclists, designers and engineers to pursue innovative technology and development. We continue our exploration for innovation and meticulously build our lights with attention to detail in every design. Every piece of our lights goes through rigorous reviews and tests in order to ensure all of your ways are lit up by our lights.