Bicycle Tail Light Usb Charging Smart Brake Sensor Night Riding Tail Light Features: High performance tail light (rear light) for red light bikes.Ensure the process*. Equipped with a smart chip.Sensing vibn and G(Gravity Accelen) side dimming during braking,auto light on & light off. P65 and.Safe to use even in rainy days and car washes USB for quick charging.500mAh built-in battery,. ABS,lightweight and sturdy Product Description: Includes:1xusb charging smart brake sensor night riding tail light Product Information Material: ABS+PC Brightness Maximum brightness 100 lumens Battery: 3.7V500mAh Battery Lamp bead ： LED Light color: Red rating: IPX6 IPX6 Lighting mode: low light / medium light / high light / low light flashing / high light flashing / breathing angle: 180 Features 1.Intelligent brake sensor 2.USB direct charging 3.Intelligent light sensing 4.24 hours long battery life This is a product suitable for household use and suitable for daily use. Suitable as a small gift for family, friends, neighbors, and colleagues. This product looks good and has a beautiful appearance. This product is reusable, durable, and easy to clean. Can be used in scenarios such as home office dormitories.