Headphones with led lights, we know, but the Chinese Meizu provides now also earbuds. The wire consists of a flexible glass, where the lights in.
That technique is called Fibrance Light-Diffusing Fiber, and is fabricated by Corning, which is best known for Gorilla Glass, where many smartphoneschermen are made of.
The neon cable is attached to a cabinet in the operation of the music, but also is wireless. Or the striking cap in the near future also outside of China to be sold, it is not yet known.
Converted they cost around 130 euro.