Intelligent sensor technology The induction mode detects ambient light. When the light is on, the car headlights dim. When dimmed, the car lights turn on, helping to conserve battery power and extend service life. Optimal lighting for outdoor activities The flashlight delivers high brightness of 250 lumens, providing reliable illumination for commuting and nighttime outdoor activities. It ensures clear visibility and enhanced safety during cycling, hiking, and camping. With robust construction and a compact design, it is suitable for everyday use and outdoor adventures in various weather conditions. Long service life and large battery capacity Equipped with a 1500mAh lithium battery for efficient power storage and fast charging. Features a built-in display for real-time battery level monitoring, allowing timely recharging. Convenient USB charging Compatible with computers and power banks for charging car lights. Green light indicates charging status, remains on for two hours after full charge, and signals when fully charged. Easy to use Tool-free installation with a single button and mounting film enables quick and simple assembly and disassembly. This design offers user-friendly operation and saves time, making it ideal for various situations without complicated procedures. Product specifications Body material: ABS plastic Lumens: 400 lumens Battery capacity: 1500mAh Product dimensions: 9.9 cm x 3 cm x 2.3 cm Functions: Intelligent detection, large capacity, waterproof, mode switching, portable Package includes 1 x bicycle headlight 1 x bicycle taillight 2 x charging cables 2 x bicycle mounts 1 x user manual Automatic adjustment of car lights based on ambient light conditions helps optimize battery usage and prolong service life. 250 lumens provide safe illumination for commuting and night riding, meeting daily lighting requirements. 1500mAh lithium battery delivers strong performance and fast charging with built-in power indicator. Convenient USB charging using computers or power banks. Tool-free installation with one-button operation for simple, time-saving setup.