Product DescriptionFeatures:-USB charging-IPX2 waterproof-Housing material: waterproof ABS-Charging time: about 2 hours-Working hours: 3-6 hours according to different usage methods-Easy to install, suitable for handlebars or seatposts of various sizes-5 lighting modes: strong light, low light, flashing, warning light, 100% lighting (as shown in the work video)-4 lighting mode style: strong light, low light, flashing, warning light (as shown in the work video)Product Specifications:LED: COB LEDBrightness: 10 lumensMode: fast flash-slow flash-warning light flash-strong light-low lightWorking temperature: -20℃~70℃Battery: Rechargeable polymer lithium batteryCharging time: 1.5hApplicable duration: strong light 5h, flashing light 32hSize: 59*20*20mmWeight: 22gInstallation position: seat postShell material: PC engineering plastic + high quality siliconeElectronics: Built-in high-efficiency LED driver and lithium battery management moduleWaterproof: IPX2 level life waterproof, so you can fear wind and rainHow to use it?Open: Click once (0.5 seconds)Off: 5 lighting modes need to be pressed for 3 seconds. The four lighting modes can be pressed for 1 second.Package List:1*tail light1*USB power cord1*Car light strap