The product matches the description. Used to extend the memory of my smartphone, I have no problems now. I copy and paste my data from my old to the new microSD and then inserted directly into my smartphone when it was off. Once the smartphone on, nothing has changed apart from a free storage space greater with this microSD. => Music Library extent, one could even put multiple movies etc ...
A small price for a 32gb class 10 which allows data rates of writes and very high readings (which I unfortunately did not measured).
Pros: Low price, class 10, 32 GB, SD adapter ,, reusable in multiple multimedia product if I have used the most for my smartphone.