64 GB MicroSDXC Class 10 UHS 30 MB/s Black Premier microSDHC/SDXC UHS-I Class 10With the more frequent use of smartphones and tablet PCs for multimedia recording and playback, there are increasing demands on the read and write speeds of dedicated memory cards. This Premier series memory card implements the latest SDA 3.0 specification UHS-I (Ultra High Speed 1, in compliance with SD 2.0 Class 10 speed), and comes with an entry-level price for consumers who want a dedicated card for their smartphone or tablet PC.Wide Range of CapacitiesIn addition to the 8, 16, 32, 64, 128 GB capacity options, a bundle option includes a single memory card and an SD adapter card, allowing for easy transfer of files to and from hardware.Increased Speed, no Increase in CostEnjoy the sequential read performance up to 50MB/s, and random read speed up to 1400 IOPS!Excellent DurabilityThese memory cards employ Error-Code Correction (ECC), and are extremely cold-resistant, heat-resistant and impervious to x-ray