JYtrend (TM) 18ft Neon Glowing Strobing Electroluminescent Wire /El Wire (Purple, Sound Activated Controller with 5V DC Adapter) Come with a sound activated controller and 5V DC adapter Great for Parties, Wedding, Costumes, Decorations, Christmas, Car, Light Signal Water resistant and weather durable bright, Flexable and cuttable EL Wire activated by the sound countroller picking up the sound Sound sensitivity slide for sound pickup