Review on 6 Pack - TDLTEK Neon Glowing Strobing Electroluminescent Wire/El Wire Set (Blue, Green, Red, Pink, Purple, White) with 3 Modes Battery Controllers by Jesus Olsen

They are exactly as stated. All 6 work perfectly. There were issues with the white, but only one of the contacts associated with the ECU needed to be straightened. Looks like it was bent during manufacture. Now it works perfectly. I ordered a second set as I only need 10 pieces. By far the best deal I've found. I noticed a hum, but only when I held the controller to my ear. However, my kids could hear it from across the room. So I would say that age and use can affect the sound. As others have said, unless you're willing to pay a lot more money ($100 for ten 3ft EL pieces and two controllers) for a novelty like to issue these. For my use (drone obstacles) they work really well and cost a lot less. Each obstacle has its own power supply, making it completely portable. They are bright but not so bright that they are blinding during FPV flight like the LEDs I've tried. Worth the money in my opinion.