Set your own light mode: 6 light mode options: turn right + high decibel speaker/turn left + high decibel speaker/red light always on/red light flashing/all flashing/Strobe. You can change different modes according to your needs and occasions to get the best lighting experience and protect you.Tweeter: 120 decibel loudspeaker, safe to remind passersby, safer night riding.USB rechargeable and 700mAh Battery: The turn signal tail light is USB rechargeable, it can be used for 2.5 hours after charging for 5 5.hours.Waterproof bicycle tail light: The tail light is made of waterproof material to ensure safe use in rainy days.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.Brightness: 80 lumensWaterproof grade: life waterproofSize:96x34x21.5mmColour: blackMaterial: ABSPackage Contents:1 * Tail light1 * USB cable2 * Silicone straps2 * Buckles1 * Remote controlOnly 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.