The first thing I tried to do with the controller was pair it with bluetooth to other devices, and I was not able to do so. I eventually disassembled one to be sure, and discovered the telltale blue battery of a fake.

This one was purchased from Cocoshop.
I complained about it and was given a refund, and told I didn't need to send the forgeries back.

https://www.newegg.com/Product/Product.aspx?I