I buy the sd card (not yet received) for my xperia z 2 to film in full HD at 60 fps and play mkv format film. from what I read, the flows are of high quality and I currently have a sd card 16gb class 10 in Samsung, which does not cause me any problems. For the price, I think it is in the standard and, quite, interesting, short, I think I made the right purchase, 5th star when I have received the card ...