5 In 1 Bike Tail Lights with Turn Signals : Multi-function anti-theft bike alarm tail lights. Feature with Turn Signal /Warning Light / Brake Light / Electric Bell / Anti-theft Alarm. Reminding the surrounding pedestrians and vehicles in all directions to protect the safety of the car and the rider - The practical bike accessory! Right/Left Turning Signals Light: Simply turn on right/left turn signals through the wireless remote control and get drivers' attention from several blocks away, securing your safety when riding in traffic. Equipped with 3 electric bells can also be used as a good vehicle horn - Electic Car Sound / Horn Sound / Birdcall Sound. 110 DB & IP54 Waterproof Bike Alarm: Anti-theft bicycle alarm can make a loud sound to draw people's attention. 110dB Loud can effectively scare thieves away, IP54 Waterproof bike rear light and remote control ensure that it can be used in all kinds of bad weather. Smart Brake Sensing Taillight: Designed with the smart brake sensor, After turning on the taillights, the bike light will automatically light up after braking for 2s to alert other drivers behind you Increase greater visibility to ensure riding safety. (Except for Emergency Light Mode) Intelligent Auto On/Off: "Slowing Flashing" and "Breathing" modes are intelligent auto modes, the alarm taillight will light up for the 30s and then detect the brightness of the riding environment, automatically turn off when it is bright and turn on when it is dark. In a dark environment, if you stop for more than the 30s, it will turn off to save power, lights up after it is triggered by vibration. About taillight charging: Please use the original USB cable in the package to charge the taillight. Since the taillight does not support fast charging, if customer uses your own electronic device charging cable, please use a non-fast charging cable to charge the taillight.