1.Bicycle Turn Signals: Our smart bike tail light with turn signals equipped with 38 high power LED lights beads, up to 60 lumen output, which is too bright enough to be seen Within 150 Meters in foggy/rainy day/or even during the day. This bicycle tail light also with horn beep, which also can effectively remind the rear vehicle. 2.Easy To Install : Designed to attach to the front and rear of your bicycle, can be combined or used single, this warning bike rear lights fit for mountain bike, road bike, off-road bike, dirt bike, scooter and so on. 3.Wireless Turn Signal : Equipped with intelligent remote control device, it can easily control bike turn signals lights,There are 5 modes:Left Turn Signal/ Right Turn Signal/ Bright Red Light/ Bright Yellow Light/ All Light Flash. 4.IPX44 & USB Rechargeable:The IPX44 Rear Bike Light is more convenient to travel on rainy days, fog ,inclement weather or through puddles. Built-in 600mAh capacity battery, which can be quickly charged through the USB interface, 3 hours of full charge, can reach 5 hours of long battery life. so you don't need to worry about running out of battery