3 LED 5000 Lumen Output The bike light is very bright, the maximum output is 5000 lumens, and the three LED lights cover a wide range, allowing you to ride at night to see wider and longer areas. With anti-glare optics, the lamp prevents pedestrians or oncoming cars from being dazzled, providing you with sufficient safety and inconvenience for oncoming people..; USB rechargeable saves you the hassle of changing batteries every week! The front and rear lights of the bicycle are USB rechargeable. It charges from your computer or any device with a USB port. With a 2000 mAh battery, twice as powerful as other bicycle lights, our LED bicycle headlight lasts up to 2.5 hours on the brightest setting and 20 hours on the lowest. It also has a flashlight function that can be used in various scenes, such as cycling, camping, night fishing, walking..; Reliable and easy to install The bicycle headlight battery indicator can tell you if you need to charge. The multi-function headlight is equipped with a mounting bracket and a pen clip that can be easily attached to the handlebars, 10s remove the headlight from the bracket, it is very convenient for you. Bring a fully charged bike light outside the home makes you feel more comfortable and safer..; Versatile, more than just a light bike Durable, lightweight and water-resistant. Can be used as an emergency flashlight, store it in your car, basement, attic and emergency kit. Use it when running, jogging, hiking, camping, walking your dog, cycling, changing tires, night activities for families/children, power outages and more!.