Very bad.
Within 3 months of use, the x stopped functioning properly, just like the R1. On the other hand, the R3 played on its own without even touching it. Also, its battery doesn't last at all.
It's not worth even the small amount of money it costs.

After a week of use... everything is fine, no issues, you can't tell the difference from the original!!! Now in the future, I don't know, we'll see