This is an SDXC UHS-1 64GB Class 10 card. In fact, this is an improvement over SDHC, which has a maximum capacity of 32GB. UHS-1 refers to "Super High Speed Bus". Type 1 UHS - 105MB/s read and 50MB/s write. There is a Type 2 that doubles that speed, but I found this card to be more than adequate. I tested the card with my Canon EOS Rebel T5 and it coped very well with both fast photos and videos. I've found that I need to format the card before my Mac can read it (even though the camera read it before formatting). The card comes with a 5-year worry-free guarantee, which is nice, especially for the price. Ultimately, the card is judged on its long-term usage, so I'll update this review in a few months after I've had a chance to experiment with it. But my first experience with this card is that it is very beneficial. It just needs to be formatted first.
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