EXTREMELY BRIGHT POWERFUL HEADLIGHTS Our head torches are built with longevity. And it is powered by 1* T6 front light + 40* LED in other sides with visible light emissions of 4000-6000 lumens which have a lifespan for more than 100,000 hours. RECHARGING BATTERY WITH PROTECTION BOARDPowered by 2*18650(included) larger capacity rechargeable batteries with overcharge protection, which is safer than other torches. USB output port and convenient red and green LED battery charge indicators. LIGHT SENSOR MODE & ADUSTABLE HEADBANDThe intelligent light mode of the head torch automatically adjusts brightness according to the environment. Anti-slip adjustable headband ensures comfort and stability, no worry about falling off when running and cycling. 4 LIGHTING MODES & USB RECHARGEABLE4 different levels of light will quickly catch attention without delay. Charge fully from any USB port in only 4-5 hours, coming with a beam distance of up to 200-300 meters so you can see everything in sight. WATERPROOF & LIGHTWEIGHTThis headlamp is built to last and its rated IPX5, it is protected against splashing or spraying water from any angle. It's lightweight and portable. Easily adjust, ergonomically designed headband.