Technology Standard U3, A1, V30. 64 GB Micro SD Card UHS-I U3 Class 10. U3, A1, V30 Standard. 64GB SDXC UHS-I Micro SD card is performing well with U3, A1, V30 standard, read speed up to 90 Mb / s and write speed up to 45 Mb / s, transfer, record and play a movie in seconds.
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