The SanDisk 32GB SDHC Memory Card Extreme Class 10 UHS-I - 2-Pack is a set of 2 identical high-performance memory cards. Each improves upon the previous version's 30MB/s max read / write speed by offering faster 45MB/s performance, enabled by the UHS-I (Ultra High Speed Class 1) specification. Minimum write speed is still 10MB/s. These data rates get you ready for the next shot faster, and cut down on wait time when you're transferring your work from card to PC. The large 32GB data storage capacity provides ample space for storing your work and your memories. Designed with the HD Video shooter in mind, this card won't give you lag time in between video clips, even at the highest resolution.