Ultra-bright Led Bicycle TaillightsThe taillight adopts high-lumen wick, 14 red SMD and 18 yellow SMD on the left and right sides, Durable, light weight, IPX4 waterproof, can meet most of the visual warning needs during ridingFive Light ModesRed light always on/left turn signal + high-decibel horn/red light flashing/right turn signal + high-decibel horn/all flashing, excellent performance at night time, It is your best partner for outdoor bikingUSB Charging PortThe turn signal tail light using USB charging port, built in 5900mAh lithium battery, and it can be used for about 18 hours after charging for 2-3 hours. The wireless remote control can easily replace the CR2032 battery, can be used normally in rain, suitable for outdoor ridingWireless Remote ControlSmart bicycle tail light with turn signal is a wireless control system installed on the head of the bicycle. The functions of the tail light can be easily controlled through three easy-to-use buttons on the wireless controller, adopts replaceable CR2032 battery, thereby providing it during riding Extra securityWidely UseSuitable for all kinds of bicycles: mountain bike, road-bike, off-road bike, racing bike. It also can be used as helmet lights, backpack lights, warning lights and more