SanDisk 64GB Ultra SDXC UHS-I Memory Card (100MB/s, Class 10, U1) This 64GB card is designed for SD devices that capture Full HD video and high-quality photography. Delivering up to 100MB/s read speeds with UHS-I bus performance, it provides Class 10 and U1 speed ratings, ensuring a minimum write speed of 10MB/s for smooth Full HD recording. Resistant to water, shock, X-rays, and extreme temperatures, it is built to endure tough conditions while safeguarding your data. A built-in write-protect switch further secures your content. MPN: SDSDUNR-064G-GN3IN, UPC: 619659185282 | Sandisk | | 64GB Ultra SDXC UHS I Memory Card | Best Buy