Review for: SanDisk Ultra 64 GB MicroSDXC Class 10 UHS-1 Memory Card with Adapter (SDSDQU-064G-AFFP-A),This product arrived via USPS, its not in any individual packing from the manufacturer, it was placed in an SD case together with the adapter.  So, I am unable to verify warranties or authenticity. The Samsung S3 recognized and formatted this with no problem.  It sees it as an external memory with 59GB.  The Six GB is probably allocated for FAT/File allocation table.  Will order again from this seller!