I test the memory card currently in the course of product testing. First time it should be mentioned that I think it's great that Samsung has decided to use different colors designed to refer to the series, blue for the standard version (Class 6), Orange for the Evo series (which I most Micro SD) and here This Pro Series for the fastest data transfer. And I have the SD card used primarily for the transfer of some large amount of data from my personal laptop on my work laptop The rate here was great, I could not, although this measure accurately, but the feeling was that it was much faster than my USB Flash Drive (32 GB USB 2.0) The magnetic security I have tested with neodymium magnets. The magnet placed on the map with the data, then further transferred data. Works flawlessly! In the TK I had also times at -18 degrees, the card is in fact also suitable for winter use (down to -25 degrees C), as an alternative for the desert (to 85 degrees). For this, the card is waterproof, shock and X fixed So overall a great product !!!