【Super bright】Attractive LED light. Equip your bike with this taillight for maximum road visibility. 【USB charging】Say goodbye to traditional batteries, using USB data cables to charge bicycle taillights is simpler and faster, and the USB interface is suitable for various charging methods, such as mobile power, computer, car charging, etc. 【Waterproof and durable】The rear bicycle light is waterproof. The highly airtight structure allows it to withstand a wide range of weather conditions. 【4 lighting modes】Comes with a silicone mounting strap that allows you to clip it to your bike. The power button offers 4 light modes, namely Slow, Quick, Fast Alternate, and Always-on. 【Multi-function】Bicycle lights can be installed on helmets, backpacks, wheelchairs, scooters, city bikes, mountain bikes, road bikes, folding bicycles, etc.