Transcend 64GB SDXC Class 10 UHS-1 Flash Memory Card Up to 60MB/s (TS64GSDU1PE) Supports ultra high Speed class 1 specification (U1) Available in capacities ranging from 8GB to 64GB Class 10 compliant - Fully compatible with SD 3.01 standards Improved camera response for fast-action consecutive shooting Built-in Error Correcting Code (ECC) to detect and correct transfer errors Class 10 rating guarantees read/write speeds of at least 10MB/s