... waterproof silicone material2.Steady,durable,high tension stress3.Multifunction mounted4.3 change modes:fast flash-slow flash ... silione body,silicone,steady,durable,high tension stress2)Multifunction mounted-It can be mounted on bicycle handle ... and so on.3)Mounted on the ahead of safety helmet-riding in the night can ... used as headlight alert4)Mounted on the back of safety helmet-riding in the night can ...