Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si 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 : 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 replace the CR2032 battery. 4. Tweeter: 120 decibel loudspeaker, safe to remind passersby, night riding. 5. Waterproof bicycle tail light: The tail light is made of waterproof material to safe use in . 6. Remote control indicator light: 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. Specification: Product Name: Remote control turn signal tail light Lamp beads: LED Battery capacity: 900 mA Charging time: about 3h Working time: about 2-3.6h Voltage: 3.7V Colour:As shown Material:ABS Size:94x32.5x26mm Package Contents: 1* Bicycle tail light 1* Remote control 1* USB cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.