... become more and more complex,along with the bicycle enthusiasts quantity is daily up, safely riding is ... double insure you riding safely.2.SpecificationArticle: Bicycle laser tail/rear lightShell Color: Red,green,blue and white ... the screw driver,convenient and fast)2).OperationThe light has 8 LED in body and 2 LD at its ... ,press again,it is off.4.PackageA bicycle laser light,a piece of USB data line,a ...