SanDisk SD_Extreme_Pro_UII_R3 64GB UHS-II SD Card Bundle

The SanDisk Extreme Pro 64GB UHS-II SD card operates on the UHS-II bus — a dual-row contact interface that provides a theoretical 312 MB/s ceiling versus the 104 MB/s ceiling of UHS-I. In practice, the card delivers up to 300 MB/s read speeds, which directly impacts two workflows: on-camera burst buffer recovery (the camera can clear buffered RAW files to the card faster, sustaining higher frame rates for longer) and post-shoot file transfer (a 64GB card that might take 15+ minutes to offload over UHS-I transfers in a fraction of that time with a UHS-II reader). For Canon EOS R5 and R6 shooters — both of which feature UHS-II card slots in their primary card position — this is the class of card the camera's card slot was designed to take advantage of.

The 64GB capacity sits in a practical range for most professional day shoots: enough for a full portrait or event session in RAW+JPEG, enough for a multi-hour 4K recording job at moderate bitrates, but not so large that a full-card file offload becomes an end-of-day project. SanDisk's Extreme Pro tier includes environmental protection ratings for temperature, water, shock, and X-ray exposure — the kind of incidental field resilience a working photographer expects from card that lives in a kit bag. The bundle includes an Everything But Stromboli USB 3.0 UHS-II card reader, which is a practical addition for photographers who don't already own a UHS-II reader and want to immediately benefit from the card's full transfer speeds at the desk.