Will use it on my phantom drone. Tested with F3, an open source SD card integrity check software. The attached pictures show the results. The average write speed is 47.98 MB/s and the read speed is 76.92 MB/s. MacOS reports a capacity of 31.87 GB. The U3 class is said to have a minimum write speed of 30MB/s, so this card is on the high side as the next V60 class is at least 60MB/s. The card's packaging claims a lifetime guarantee, but there's no contact information. My favorite aspect of renting a card is the name.
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