characteristic: 1: Adjust the upper and lower angles of the headlights, so that the upper edge of the main light spot shines on the waist of the oncoming person with a long range, and it can also ensure that the light spot will not shine on the head of the oncoming pedestrian and the driver. 2: The lights have five gears (400 lumens for 4 gears, 800 lumens for 5 gears), generally use low-brightness gears for slow riding, and high-brightness gears for fast riding. (The eyes have the ability to adapt to the environment. The use of the brightness of the lights has little to do with the surrounding environment, but has more to do with the riding speed) 3. High transmittance, acrylic lens: high transmittance, light weight, strong impact resistance, clear and soft light, even distribution 4. Aluminum alloy shell material: to create a delicate metal texture, more attentive workmanship, to create a better quality aluminum alloy material, more wear-resistant and scratch-resistant, polished and bright edge details will not be 5. High-power chip: a beam of light that guides the night, highlights the wick, reduces energy consumption, and clears the way forward (400/800 lumens are both 200 meters long-range) 6. USB charging is more convenient for riding: USB charging, fast charging and lighting for a long time to ensure your riding demands 7. Not just headlights or flashlights: when you travel at night, illuminate the front to accompany you through every night road