In my Dell 5285 tablet, this 128GB UHS-ii SD card tested the following speeds: Read 240MB/s, Write 135MB/s, which is very close at the specified speeds. Speed may increase/decrease depending on the device and type of files being transferred. There are slower cards with more memory for the same price, but I needed fast read/write speeds to transfer large photo files. This card was cheaper for me than the more expensive v90 cards. I don't make videos so I can't comment on the quality of the video. I've been using this card for three weeks and I highly recommend this micro SD card for photography!
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