Bright Bicycle Turn Signals: Our smart bike tail lights with turn signals are equipped with 38 high-power LED beads with an output of up to 60 lumens, which are bright enough to be seen in a range of 492.1 feet in fog/rain/even daytime. This bicycle tail light also has a horn beep, which can also effectively alert the vehicle behind it. How to travel light and ride safely on smart bikes!Wireless remote control turn signal: Equipped with a smart remote control device, it can easily control the bicycle turn signal, there are 5 modes: left turn signal/right turn signal/red light/yellow light/full flash. This will better attract the attention of other cyclists and make it safer for each other to ride. (Note: Maximum remote control distance: 16.4 feet)IPX5 Waterproof USB Charging: IPX5 waterproof bicycle tail light is more convenient in rain, fog, bad weather or through puddles. The built-in 600mAh capacity battery can be quickly charged through the USB interface, fully charged for 3 hours, and the battery life can last up to 5 hours. So, you don't have to worry about running out of battery.Easy to Install: These safety warning bicycle tail lights are designed to be mounted on the front and rear of the bike and can be used in combination or separately for mountain bikes, road bikes, dirt bikes, motocross bikes, scooters, etc. No tools required, just attach the quick-release rubber strap holder and you're ready to go.