... So our low carbon,pro-environment, rechargeale and water-proof tail light which just like a diamond is born. With more promotion ... protect the battery(that is take out the charger,the tail light off,if plug in ,it is on).the You ... ,tight the nut.(not need the screw driver,convenient and fast)2).OperationThe light has 8 LED in body and ... rubber strips,a bracket,a circle,a plastic bags screw,a nut.5.Others