Automatic turn off after 30 seconds, activates when bike moves, ensuring safety and convenience. Our high-lumens bike rear light is bright enough to remind the surrounding vehicles. As a great accessory for any bike, our high-lumens bike rear light lets you choose between different lighting modes. IPX6 waterproof and made of aluminum alloy, providing durability and a sleek appearance. Our bike brake tail light has a long lifespan. Long-lasting battery life of up to 50 hours on full charge, with built-in 400mAh. Unlike other similar products, our bicycle brake tail light is suitable for most types of bike, road bikes, MTB, bicycles and so on. Description: Our bicycle brake tail light is the perfect accessory to enhance your cycling experience. This innovative tail light is equipped with advanced features to ensure your safety on the road. With its intelligent design, the tail light automatically turns off after 30 seconds of inactivity, conserving battery life. It also has a motion-sensor that detects movement, instantly turning the light back on when you touch or start riding your bike. Even in bright sunlight, the taillights automatically turn off thanks to the sensor's functionality. However, if you prefer to have the lights on during the day, simply choose between the three-mode and four-mode options. Our high lumen LED tail light provides exceptional brightness, making your bike visible from a distance. It features a unique function that switches to high brightness for 5 seconds when it detects an obstruction, effectively warning drivers and improving your safety on the road. The light is made of durable aluminum alloy material, giving it an elegant and sleek appearance. With a built-in 400mAh battery, this tail light can last up to 50 hours on a full charge. Item Name: Bike Tail Light Material: Aluminum Alloy Waterproof Grade: IPx6 Battery Capacity: 400mAh Three Modes: Slow Flash/Breathing Flash/Always-on Features: Simple Installation, Durable, High Brightness Size Details: L: 4cm/1.57", W: 3.4cm/1.34" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Bike Tail Light 1 x Bracket 1 x Strap