[5 LIGHTING MODES]: This bike light has 5 adjustable modes suitable for different road conditions. It uses German quality standard and anti-glare convex lenses similar to car headlights, without causing dazzling effect to passengers and drivers on the road and ensuring personal safety. [WATERPROOF & RECHARGEABLE]: Built-in 1200mA battery with fender, anti-overcharge and discharge function, with high safety performance and long life cycle up to 3.5-6.5 hours. Match with 2 highlighted amber fog lights, which have strong penetrability, being able to illuminate the front road even in foggy or rainy days. 10 COB red light beads on both sides for warning effect. [THEFT ALARM]: Super waterproof function, USB rechargeable headlamp, accurate battery indicator that allows you to enjoy a worry-free trip. It's also smart enough to deter thieves Deafening high decibel 130 sound, 5 speaker modes optional and surely suitable for you. 5 lighting modes, 300 lumen output, illuminating your way home. [SMART AND MULTI-FUNCTIONAL]: Our bike lights have multiple features that beat all competitors Capable of recording total mileage, individual mileage, maximum and average speed, screen time, and even calorie calculation. 4 battery indicator lights, with high precision, our light set works great in any weather allowing you to know the battery in real time and enjoy a worry-free trip. [EASY INSTALLATION]: It is very easy to install Both the headlight and taillight can be easily loosened and attached without any tools. Split switch design, the upper part controls light modes, the lower part controls speaker volume, allowing more convenient operation.