Got the (expensive) Card purchased separately in order to use the panorama function of my Olympus - which I was sadly disappointed, the fact was not working. Had thereupon contacted the Olympus customer service, and wrote (in a photograph of the card out) that this most likely is not an original product. Basically, would suit me not so important, but if panoramic images do not work, I'll buy no so expensive card ....
Returning has worked quite well, because I can throw to the seller nothing.