SanDisk offers dozens of different microSD cards, from cheap and cheerful basic options to premium UHS-II cards boasting super-fast data transfer speeds. The Extreme A2 sits roughly in the middle of the SanDisk microSD range. It's capable of 190MB/s maximum read speed and up to 130MB/s write speed - not record-breaking speed, but quick enough for the vast majority of microSD use cases. What's more, it also has an A2 rating, meaning it's able to load apps faster if you want to use the card in an Android phone (most microSD cards are only have the slower A1 rating).
Capacities for this A2 card include 64GB, 128GB and 256GB. It's a pity higher-capacity options aren't available, and be aware that the 64GB card has slower read/write speeds than the larger capacities (170MB/s read, 80MB/s write).
