Did you know that 75 percent of cycling accidents happen in daytime? This taillight keeps you visible not only at night but also in the daytime, keeping you and your loved ones safe all the time. Features: A compact, lightweight, and versatile bicycle tail light Chargeable with the help of any USB port IPX-4 Highly-water resistant for all-weather usage Powerful lumen, ultra-bright LED output alerts road users to your presence 240 Degree wide visibility, Side illumination ports enhance your degree of visibility Quick mount to bike seatpost, seatstay, or rack without any tools 4 Light mode options, Choose from steady, strobe, fancy flash, or eco flash modes Widely used for mountain bike headlight, taillight, helmets, backpacks, belts, scooters, baby stroller, walking stick, wheelchairs. How to Charge: 1.Atach the micro USB cable to the Bike light’s micro USB input port. 2.Insert the other end of the cable into either an AC adapter(not included ) connected to a wall socket or an actve computer USB port. 3.The LED indicator of tail light has a red light when charging and the LED indicator will turn to be green when finished charging. Package Contents: 1X Taillight (red light) 1X USB cables 1 X Silicone mounting Strap for Taillight