Since on the map only MP3s were copied on the go, I had no real data loss. But it is annoying, time cost and reduces the battery life because the device with increasing frequency of arrival and logoff could hardly go into standby mode.
Result: unfit.
My goal was to use the card later in my HD Viedokamera when needed. In this reliability but that is no longer in question. But if the speed is actually so low, as indicated in other reviews, there would be nothing good came of it anyway.
But yesterday I have an email with content "[...] We praise you for your bravery in purchasing a product from a fairly unknown company [...]" and asking them to post a review get.
Gladly - hereby done.