Read speeds of up to 1700MB/s and 1400MB/s write speeds offer low latency during high-speed recording and enhance workflow efficiency far beyond existing SanDisk cards [512GB only; 128GB-256GB = 1700MB/s read / 1200 MB/s write; 64GB = 1500 MB/s read / 800MB/s write] | Up to 1700MB/s read speed; up to 1400MB/s write speed. Based on internal testing; performance may be lower depending upon host device, usage conditions, and other factors. 1MB=1,000,000 bytes. | Enables smooth, RAW 4K video(1) | (1)4K video (4069x2160p) support may vary based on host device, file attributes, usage conditions and other factors. | The Cfexpress CardType B is backwards-compatible with select XQD cameras that adopt firmware enabling Cfexpress(2) | (2)Backwards compatibility with select XQD cameras subject to the availability and installation of a camera firmware update provided by the camera manufacturer enabling CFexpress compatibility. | RescuePRO Deluxe Recovery Software included(3) (download required) | (3)Registration required; terms and conditions apply | Limited lifetime warranty(4) | (4)30-year warranty in Canada, Germany and regions not recognizing lifetime limited. See official SanDisk website for more details regarding warranty in your region.