The Intelligent Bicycle Tail Light is designed to ensure your safety during night rides. With high-quality LED beads, it emits a bright light that easily catches the attention of pedestrian and vehicle around you. Equipped with intelligent features, this tail light provides added safety and convenience. Its compact and reliable design, along with easy installation options, makes it suitable for both mountain and road bikes. Features: High Brightness LED Beads: Utilizing premium LED beads, this tail light emits a high-intensity light, effectively alerting surrounding pedestrian and vehicle, thus enhancing your safety during night rides. 6 Lighting Modes: Choose from six lighting modes - constant light, breathing flash, slow flash, rhythm flash, endurance flash, and quick flash. Easily switch between modes based on your preferences and riding conditions. Rechargeable Battery: The built-in rechargeable battery offers long-lasting performance with low power consumption. The battery indicator allows you to monitor the remaining power in real-time, ensuring you are aware of the battery status. Reliable Quality: Crafted with high-quality ABS material, this tail light exhibits exceptional durability, sturdiness, and resistance to aging. With an IP66 waterproof and dustproof rating, it effortlessly withstands outdoor weather conditions. Compact and Easy to Install: Its compact and lightweight design makes it easy to install and use. It supports seat cushion, seatpost, and saddlebag installation, making it suitable for both mountain and road bikes. Specifications: Type: Regular/Smart(optional) Color: Black Material: ABS Input Voltage: 5V Battery Capacity: Regular: 250mAh Smart: 400mAh Waterproof: IP66 Item Size: 33 * 33 * 30mm/ 1.3 * 1.3 * 1.2in Item Weight: Regular: 19g/ 0.67oz Smart: 21g/ 0.74oz Package Size: 130 * 73 * 36mm/ 5.1 * 2.9 * 1.4in Package Weight: 65g/ 2.29oz Packing List: 1 * Taillight 1 * Seat Post Bracket 1 * Seat Bow Bracket 1 * Mounting Strap 4 * Cable Tie 1 * USB Cable 1 * AntiSlip Pad