ULTRA-BRIGHT: The Light has 5 Light Modes,and bright enough to be seen away in foggy/rainy day or even in dark night.Adjustable angle up and down.Convenient operation, easy to install, can be installed in a few seconds. USB RECHARGEABLE AND TWEETERS: The turn signal tail light is USB rechargeable, and it can be used for about 36 hours after charging for 3 hours. The wireless remote control can easily replace the 2032 battery. bike tail light with 120 decibel loudspeaker, safe to remind passersby, safer night riding. 5 LIGHT MODE OPTIONS: Turn right + high decibel speaker, turn left + high decibel speaker, red light always on, red light flashing, all flashing. You can change different modes according to your needs and occasions to get the best lighting experience and protect you. WIRELESS REMOTE CONTROL: Remote control the bike tail light to send signals in different modes by the 3 easy to use buttons on the wireless controller.Lightweight and durable bicycle tail light, which can be installed on all bicycles, children's bicycles, and adult bicycles. It can also be used as helmet light, backpack light, warning light, etc. WATERPROOF: Waterproof level make this bike turning light can be used in small to moderate rain, your best partner for outdoor biking. The best outdoor cycling safety equipment can be a gift for your family and friends.