It can get confusing when Micro SD, Micro SDHC, and Micro SDXC. The Micro SDHC and the Micro SDXC have differences that will help you in choosing the one that will work best for your needs. The Micro SD is the standard version. This can be used for your different gadgets. The Micro SDHC means “High Capacity.” It has a higher storage compared to the Micro SD. Micro SDXC means “Extended Capacity.”
Some of the Micro SDXC cards can go up to 2 terabytes which can be very large. This is meant to be used when you want to have high-rate transfers. Any of the cards will work well but you may have some preferences depending on how fast they will work.