Equipped with a high-brightness 1000-lumen LED, achieving a maximum illumination distance of 300m. The 180° wide-angle illumination ensures a clear view even on dark roads. Features five illumination modes: sensor automatic mode, high mode, middle mode, eco mode, and SOS flashing mode, allowing adjustment according to road conditions and scenes. Automatically adjusts the light's brightness according to the surrounding ambient light. It becomes brighter as the surroundings get darker, ensuring safety during nighttime riding. Also equipped with a function to automatically turn off the light in bright environments to conserve battery power. ※ Smart light sensor mode operation explanation: During normal riding (light sensor mode ON) → Entering a tunnel/dark place (automatically activates illumination mode) → Returning to a bright environment (automatically deactivates illumination mode). Securely fits and can be firmly fixed to any type of bicycle. It adopts a tool-free installation bracket and fits handlebars (diameter 19-28mm) of all bicycles, including road bikes, cross bikes, and mountain bikes. Withstands vibrations from bumps and does not easily fall off even with impacts from rough roads. The lightweight ABS resin body is impact-resistant, boasting durability to withstand drops and impacts. Reliable IPX6 waterproof rating for rainy weather, allowing you to ride without worry even in sudden rain; a bicycle light that can be used in bad weather. Type-C fast charging fully charges in 5 hours and can be used for up to 20 hours. The LED power indicator allows you to check the remaining riding time in real-time. The battery level is displayed on the LCD screen, making it easy to know when to charge, and you don't have to worry about the battery running out suddenly while riding. Not only for bicycles, but also useful as a flashlight in various situations such as camping, mountain climbing, night fishing, night walks, power outages, and emergencies. The sensor bicycle light is a high-performance design with impact resistance, splash-proof construction, and disaster prevention functions. It can withstand rainwater and splashes in daily life and is very useful in preventing theft and during evacuations. With a completely sealed protective design, it can be used not only at home but also in bad weather such as storms. (The charging port is sensitive to water, so close the cap tightly.) (Avoid prolonged submersion.)