1,the case in horn amplifying design 2,Movable speaker when travel 3,any color is ok materialsiliconesize106×50×47mmcolorblack,red,white,blue and so onlogoas your requiredpackagepolybag/pc,customizer packaging are availablefeatureeasy to install ,clean, take with.Accessoryarmband ,attach the armband on bike,enjoy music during the trip. functionto protect you iphone4 from dust,bump,scratches and ...