The Knog Blinder 4 has four super bright LEDs that pump out up to 80 Lumens of front light and 44-Lumens of rear light. Its optimized optics focus and directs a smooth beam pattern that makes the Blinder visible over 800 meters. With 5 different modes (Steady, Fast Flash, Organic Flash Slow, Organic Flash Fast, Eco flash) and a burn time of up to 3-hours in constant beam and up to 50-hours in eco-flash mode, they will keep you well seen.