Crystal LED Disco Lights
The son is very pleased, came quickly, did not communicate with the seller. The packing is not very, but it works brightly. Will see how long will work.
Just blinking LEDs, no rotating mechanical parts. LEDs react to music, clearly there is a microphone-there is a hole near the USB connector.
Cool thing, you can connect to the bar, laptop and so on. Through the time of course heats up, but I do not use it for a long time. For such a price, it's just fine.