SanDisk Extreme 64GB SDXC UHS-1 Flash Memory Card Speed Up To 45MB/s- SDSDX-064G-X46 (Label May Change) [Old Version] Extreme Speed up to 45MB/sec read/write speeds for faster shot to shot performance and faster downloads. Extreme Full HD video recording with both UHS Speed Class 1 for the new UHS- I Bus I/F and Class 10 for High Speed Bus I/F to capture Full HD (1080p) Extreme Capacities with up to 128 GB capacity for more Full HD video and more uncompressed maximum file size images. Extreme Technology based on new UHS-I bus architecture for increased speed so youll be ready to capture it all. Extreme Reliability advanced Error Correction Code (ECC) engine improves overall data integrity and reliability of the card during read and write. Extreme Durability built for and tested in harsh conditions; temperature proof, water proof, shock proof, and x-ray proof.