On&rsquo;h EL Wire - 9ft Neon Glowing Strobing Electroluminescent Wire DIY with 3 Modes Controllers- Red, Green, Blue, White, Pink, Purple, Orange (9ft, Blue) Flexible EL Wire: Easy to bend and shape for fun decoration. 3 Light Modes: Stay On, Strobe, Blink. Can easily switch the mode by pressing the button. Portable Neon Lights: Battery pack is handy, require 2 AA batteries (not included). Wide Application: Great for parties, Halloween, costume, camping, car decoration and so on. Please note: When using the battery pack, there will be a small humming sound.