I was/am allowed to test this K&F CONCEPT microSDXC UHS-I SD memory card with 64 GB free of charge, which normally costs €20 in a set with an SD adapter and is perfect for 4K videos thanks to U3, V30, A1, Class 10.

The set, produced in China, was delivered very quickly and perfectly packaged.

The card was easily recognized by both the dash cam and including the adapter on the Win10 PC.
The expected speeds in terms of writing and reading based on the specified specifications are generally achieved, which was very important to me, because you should be able to expect that for this purchase price, since there are (more) well-known providers with comparable micro SD cards partly offer better properties.

Nevertheless, I'm very satisfied and I'm curious to see whether the little rascal will also convince in terms of durability and long-term reliability.
But that will only become apparent in the long-term test; if necessary, I will then add something significant.

Until then, however, I give it a satisfied 5 stars, because the memory card fully meets the requirements resulting from the manufacturer's information.