Esky 15ft Portable Water Resistant Neon Glowing Strobing Electroluminescent Wires (El Wire) for Parties and Decoration, with Battery Pack (Green) 15 feet of 2.3mm EL wire Battery pack controller with off/on switch and strobe mode Great for rave parties, displays, and costume decorating Note: Requires 2 AA batteries for use. Batteries not included.