Feature: 1. High-brightness SMD patch lamp beads: 14 red SMD and 18 yellow SMD on the left and right sides, high brightness, effectively improving the safety of night riding. 2. Set your own light mode: 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. 3. USB rechargeable and CR2032: The turn signal tail light is USB rechargeable, it can be used for 2.5-3 hours after charging for 1-2 hours. The wireless remote control can easily replace the CR2032 battery. 4. Tweeter: 120 decibel loudspeaker, safe to remind passersby, safer night riding. 5. Waterproof bicycle tail light: The tail light is made of waterproof material to ensure safe use in rainy days. 6. Remote control indicator light: 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.