Ideal storage for Android smartphones and tablets Up to 64GB stores more hours of Full HD video (1GB=1,000,000,000 bytes. Actual user storage is less. Full HD (1920x1080) video support may vary based on host device, file attributes, and other factors. Up to 140MB/s transfer speed, move up to 1000 photos per minute (up to 140MB/s read speed, designed with proprietary technology to reach speeds exceeding UHS-I 104MB/s, requires a Compatible device. Based on internal testing; performance may be lower depending on host device, interface, usage conditions, and other factors. 1MB = 1,000,000 bytes. Based on average file size of 3.55MB (total maximum 3.7GB) using USB 3.0 The image was tested internally with a reader. Your results will vary based on host device, file attributes, and other factors. Load applications faster with A1-level performance (A1 performance is 1500 read IOPS, 500 write IOPS. Based on internal testing. Results may vary based on host device, application type, and other factors. Level 10 for Full HD video recording and playback (Full HD (1920x1080) video support may vary based on host device, file attributes, and other factors.