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 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, night riding. 5. Waterproof bicycle tail light: The tail light is made of waterproof material to safe use in . Remote control indicator light: and 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: 4 x Bicycle tail light 4 x Remote control 4 x USB cable Only the above package content, other products are not included. Note: Light reflection 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.