Instruction: Answer the given question using the supporting document.

Input:
Question: What class is this card?
Document: Great memory card - I was able to download a lot of music on my phone and have plenty of memory for pictures.
This card is exactly as advertised. I also received it in just a couple of working days. Works perfect in my Nokia Limia 521.
The card came in within a week and my husband wasted no time copying his music and pictures onto it. Great value and capacity.
This is another of my memory card with the jeatem happy because I bought another one. I would recommend this card to all interested parties
The SD card came in its original package and Nokia Lumia 521 recognized the card, so now the phone has 16 GB of additional memory.
I imagine that this memory card will hold a lot ofpictures. I bought the 16 GB I'm ok with it. I never useda memory card before so, I can't  give a review on something thatI know so little about and that I'm not to familiar with.
I initially bought this to store pictures, but when I put it in my phone, I was able to download all kinds of apps to my phone and now I no longer get the &#34;Storage is Low&#34; message on my phone. I can use the memory card in any phone and that is a plus for me because I intend to upgrade my cell phone very soon.
works very well.
Yay! I so needed this item because my phone was malfunctioning due to low memory. But this amazing little thing has made my life better!The item came on time and was packed very well.
Very good product ! Arrived on time and did exactly what it was said to do hold memory !! I would most definitely recommend this product if your in need of more space ! !
Answer: I do not know but it works well. The Nokia Lumia 521 immediately recognized the card and brought up the option whether to store the new photos, videos etc in the SD card. It is a micro SD card that can be inserted in the Nokia Lumia. If you want to use it in the computer then you have to use the included micro SD jacket that will go in to the computer. In this case the micro SD card has to be inserted in to the bigger jacket. Anyway, it is all included and works well. Hope this helps.