This is the ADATA Premier 64GB microSDXC memory card, the standard (non-A1) tier of ADATA's Premier range, offering UHS-I performance rated at 50MB/s read and 33MB/s write speeds with a minimum random read/write IOPS rating of 1400/100 — solid, dependable everyday performance for basic phone and camera storage rather than 4K video capture or app-on-card use. It carries SDMI compliance and ships with a full-size SD adapter, letting it work in any standard SD card slot as well as microSD-native devices, though it's not compatible with SDHC-only cameras or readers. At 64GB it's a practical, budget-oriented capacity for expanding a basic phone or tablet's storage or adding a memory card to an older device that doesn't need the higher speed classes of ADATA's Premier 85/A1 or Premier One ranges. ADATA backs the card with a lifetime warranty, sold as a retail pack.