... city roads become more and more complex,along with the bicycle enthusiasts quantity is daily up, safely riding is concerned by ... hours,these can double insure you riding safely.2.SpecificationArticle: Bicycle laser tail/rear lightShell Color: Red,green,blue and white ... .PackageA bicycle laser light,a piece of USB data line,a 3.7v charger,2 rubber strips,a bracket,a circle,a plastic bags screw,a nut ...