PADONOW Smart Bike Tail Light: Rear Bicycle Brake Light USB Rechargeable Wireless Anti-Theft Alarm Taillight Auto Red Led Flashing Back Lights Waterproof Road Cycling High Lumen Daytime Strobe Light

Ultra Bright COB LED Support Your Safety: With high lumen COB LED, Bike Brake Light, Daytime Strobe and Flashing Lights make you more visible in riding. Super bright braking light timely warn signals to road users even as slowing down or stopping
Wireless Anti-Theft Alarm Prevents Your Bicycle Stolen: Built-in high-decibel smart sensitive horn, the led bike tail light will make 3 levels alarm volume even as bicycle is touched. Indisputably noticeable to deter a theft from stealing your bicycle
Auto ON/OFF Make Your Cycling Safety More Simple: Flashing and breathing lights auto activate when the rear bike light is moving or vibrating, differently the bicycle tail light go off. Do not be concerned about forgetting to activate taillight in cycling
Light Sensing Make Your Riding More Convenient: The bike tail light with intelligent sensor, rear flashing and breathing light activate robotically in low brightness and turn off in high-intensity light. Save your time to switch the rear bike light
Easy and Simple to Use: Secure USB rechargeable polymer lithium battery make the light battery life as much as 40 hours; IPX5 water resistant makes the back light used even in bad weather; Saddle and seat post mounting make the taillight fit different bicycles