Fakes everywhere, with numerous manufacturers being capable of literally copying the design, internals and functionality. The user in those cases shouldn't believe that the published specifications are real, if nothing looks that way.
There are interesting cases in YouTube where users with technical background and specialized tools are testing if the specifications meet reality or not. The results are perhaps surprising, maybe not due to the karma of the cheapest Chinese fakes that usually go to the test. It's not only specifications because if the product serves as an interface to connect or give power to other devices, you could in some circumstances say goodbye to them.
Toxic plastics, no regulations or meeting standards, a fake and at the same time a troublemaker. A good reason to find alternatives, and it's usual that they are there very near. Discounts, sales, are welcome.