Very good.
I recommend placing a clean cloth between your eyes and the device so you don't have to keep cleaning it all the time. A "perflex" cut from life or a cut piece of cotton cloth makes it easier. Otherwise, you have to clean it almost every time you use it.
My wife informed me that her dark circles have significantly diminished.
The package arrived very quickly. No box - very well packed. Pleasant music, pleasant massage. The only downside I can note is the smell of rubber, but it's not very strong and I hope it will disappear quickly.
It took a long time to arrive but works very well.
It's great for the price~