Set your own light mode: 6 light mode : 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, 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 safe use in .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.Brightness: 80 Waterproof 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.