Enhanced Safety Features: Equipped with smart brake induction technology, this bicycle tail light intensifies its beam upon detecting a decrease in speed, significantly enhancing visibility and safety during rides. Waterproof and Durable: Designed for the avid cyclist, this LED taillight boasts a waterproof construction, ensuring functionality in all weather conditions, making it your reliable partner for outdoor cycling adventures. USB Rechargeable: Forget about replacing batteries. This light comes with a USB charging feature, providing convenience and eco-friendly usage. Charge it on the go with any standard USB charger. Universal Fit: Installation is a breeze with its adaptable fitting mechanism, making it suitable for a wide range of bicycles including MTB and road bikes. Securely mounts to your seatpost or saddle with ease. Colour:Black+Red Material:plastic Package Contents: 1 * Brake Induction Bicycle Tail Light Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.