Transcend 64GB Class 10 SDXC UHS-II SD Card (TS64GSD2U3) The fastest transfer speeds: Read 285 MB/s & Write 180 MB/s Low power consumption and fast write speed help maximize battery runtime Built-in hardware ECC technology for detecting and correcting errors Provides up to 64GB storage capacity to store a maximum of 4,384 RAW images Offers free download of RecoveRx Limited Lifetime Warranty