Hey! Say! JUMP penlight Yuya Takaki - Purple rubber band included The light color changes in time with the music at venues with the FreFlow wireless system. At Hey! Say! JUMP concerts, it was announced that you could use the same penlight for three years when it was first released. Batteries can be replaced without using screws. Please prepare your own batteries. Includes outer bag and instruction manual. Used once at a concert. Stored in its bag immediately after use. Stored at home in a dark place. Please understand that this is stored by a private individual. Group name: Hey! Say! JUMP Item type: Penlight