1. and Reliable: The bicycle tail light shell is made of high-quality PC engineering plastics, durable and can be used for a long time, not easy to damage. 2.Rechargeable design: The bicycle cycling taillight adopts USB charging design, which can be connected to computer, mobile power and other devices with USB interface for charging, convenient and fast. Built-in large-capacity polymer lithium battery, after fully charged, the strong light block can be used for 5 hours, and the warning light flash block can be used for 32 hours. 3.High visibility: The riding warning light adopts red light for better visibility, which can improve the when riding at night and ensure your , you can set your own light mode according to your needs, it can be used as a bicycle tail light, warning lights or headlights. 4.Universal for Bikes: Bike tail lights are fixed with magic sticker straps, adjustable length fits most sizes of handlebars and seatposts, easy to install, suitable for all bikes, a great choice for bike lovers.