The product contains four LEDs, which provide bright and visible lighting for safety purposes.This taillight is rechargeable, which means you can charge it using a USB cable. This is a convenient feature as it eliminates the need for replacing batteries.It offers three different lighting modes. These modes can include steady lighting, slow flashing, fast flashing, or other patterns. Having multiple modes allows the user to choose the one that best suits their visibility and battery life needs.The taillight is designed to be waterproof, making it suitable for outdoor use, even in rainy conditions. This is crucial for maintaining functionality in various weather conditions.This taillight is likely designed to be attached to a helmet, ensuring visibility from the rear. This is especially important for motorcycle riders and cyclists to enhance their safety on the road.As a warning light, it's intended to make you more visible to others on the road, improving safety and reducing the risk of accidents.