Turn Tail Light Intelligent Sensing Brake Light Cycling Equipment Night Riding Colorful Lights Features: Brake sensing function: When you brake hard, the tail lights will automatically light up to remind others that you are slowing down or stopping. This helps to increase the security of nighttime cycling. Audio steering function: Through the remote control, you can emanate a turn sound to remind surrounding vehicles and pedestrians of your intention to turn. This helps improve visibility while cycling. High lithium battery: Equipped with 500mAh lithium battery, it provides long-lasting battery life and ensures long-term use. Multiple lighting standard: Equipped with 7 different lighting modes to choose from, it can be adjusted according to different environments and needs, enhancing personalized cycling experience. Intelligent sensing function: equipped with vibration sensing, magnetic induction, and intelligent light sensing functions, it can automatically trade lighting modes according to different situations, ensuring effective lighting in dark or low light environments. Meanwhile, the intelligent stop function can extend the battery life, and theantidusting and watertight design is more suitable for use in various weather environments. In addition, wireless technology enables sensitive interaction between the remote control and lighting, providing more convenient operating experience Product Description: Product Name: Intelligent Sensing Turn Tail Light Colors:Black Material: Plastic Battery: 500mAh Battery life: 5-54 hours Product size: 4.4x4.4x3.2cm (1.73x1.73x1.26 inches) Packaging size: 6.8x4.7x9.6 cm (2.67x1.85x3.78 inches) Gross weight: 128 grams (0.28 pounds) Package Contents: 1 * Tail lights * Ties 1 * Controller * Sensors 1 * Fixed bracket 1 * Battery * Shim 1 * Charging cable 1 * Instructions