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30 high-end LED lights 90 lumens output 120° wide angle red beam Our bike taillight can provides superior daytime visibility and make you more visible for other road users. Automatically high light with fast flashing when decelerating, ultra-bright for 12 seconds warning back rider. The light mode will be restored to the original light mode (before the brake light) after flashing for 12 seconds. The two ground warning lines will be projected on both sides of the bike light to attract attention to improve safety and expand your safe riding range. Two modes are available: Steady Flashing After half an hour of no motion detected, the bicycle taillight will automatically turn off to save the battery power. You need to long press the on/off button on the taillight again to turn on it on the next ride. Made of an waterproof sealed aluminum shell, it can effectively protect this bike rear light from rain damage. Please close the USB charging cover tightly when using in the rain to prevent water from entering the charging port. USB rechargeable design make sure this bike back light can be quick charged from any device with USB port, keep running for 5-10 hours after fully charged. Please use the original USB cable to fully charge it before using it for the first time.






