Product shipped was the newer Class 10 speed rating. Despite inconsistent results by others, my ASUS TF700t accepted this MicroSDXC UHS-I card and was able to read/write the full 59.6 GB of card memory. This was nice since ASUS only advertises compatibility with MicroSDHC cards up to 32 GB.

My partner bought this for my new Samsung mobile, as she had recently given birth to a baby boy, who I tend to take a lot of photos & videos of.It worked for about 6 months. Fortunately, as usual, i downloaded every month for the first 3 months, but as bub got older, nighttime feeds became the norm & sleep deprivation crept in, my normal patterns slipped. Then recently the phone registered a msg, advising the SD card was full. The next day it registered a msg saying it was faulty. Thinking the faulty msg was just the card being full & at the next opportunity, plugged my phone into my laptop & the Scandic could not be read. I unshared & rete the red the phone multiple times & finally took the card out & put it in the adapter that it came with. It crashed my laptop ... MoreMy partner bought this for my new Samsung mobile, as she had recently given birth to a baby boy, who I tend to take a lot of photos & videos of.It worked for about 6 months. Fortunately, as usual, i downloaded every month for the first 3 months, but as bub got older, nighttime feeds became the norm & sleep deprivation crept in, my normal patterns slipped. Then recently the phone registered a msg, advising the SD card was full. The next day it registered a msg saying it was faulty. Thinking the faulty msg was just the card being full & at the next opportunity, plugged my phone into my laptop & the Scandic could not be read. I unshared & rete the red the phone multiple times & finally took the card out & put it in the adapter that it came with. It crashed my laptop multiple times, just trying to read it with Windows Explorer. When I finally got a read on Explorer, it showed 0 data.I don't know how many photos & videos we've lost of the little man, at stage in his development that's really short. These were important photos to us, photos we would never want to lose, as well as photos of him with friends & relatives we'd promised to send on & photos of his first Christmas. The scandic has lost them all.I don't know how something that sits static inside a phone can fail so quickly, but I do know the cost to us & that I'll purchase a different brand next time.If your photos and memories are important to you, avoid the lesson I've just learnt & buy something more expensive from a brand with a name worth protecting. That way, even if it is only protecting their own name that the manufacturer cares about, there's a better chance your photos will be protected.Thanks for nothing Scandic.

I previously had one in a Galaxy S5 which had a tendency to get hot. Eventually it fried the card rendering it useless. I don't blame the card though. I bought this one to use in my Galaxy S9 which runs much cooler, and no problems. From my experience, I'd say this is a really good card with plenty of storage for pictures video, but I don't suggest using it in a device that reaches high temperatures.