Light & Motion provide cyclists with unmatched protective visibility, anytime of day, with a distinct 180 degrees of dedicated lighting. Powerful red LEDs coincide with hi-intensity amber side lighting giving commuters peace of mind to focus on the road ahead. Simple and secure seat-post mounting allow tool-free removal and installation between various bicycles. Micro-USB charging gives users a straightforward solution to charge almost anywhere. This light has several brightness settings to choose from and a flashing setting. Rated to withstand a drop from a height of 1 meter. Please refer to the photos for information on lumen output, charge life and total charge time.