3 LED 5000 Lumen OutPut The light of the bike 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 more distant areas. With anti-glare optic design, the lamp prevents pitons or oncoming cars from being glare and provides you with enough safety and inconvenience for oncoming people. . USB rechargeable, save yourself the hassle of replacing batteries every week! The front light and rear light of the bike are rechargeable by USB. It charges from your computer or any device with a USB port. With a 2000mAh battery, 2 times more powerful than other bike lights, our LED bike headlight lasts up to 2.5 hours on the brightest setting and 20 hours on the lowest. . Three Lighting Modes and Versatility High, Low, Fast Flashing Three Modes...