They are Class 10, U3 and V30(4) so it has the speed you need for Full HD video (1080p) or 4K(3) recording and playback, with read speed of up to 100MBs(5). The SanDisk High Endurance Micro SDHC Card with Adapter 32GB has fast 100 MB/s Read Speeds, with Class 10 full HD recording and playback and video speed V30.
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