ProGrade Digital 64GB SDXC UHS-II V90 Memory Card ( Cobalt )

High performance speed certified to perform at a sustained read rate of up to 300MB/second; sustained write speed of up to 250MB/second V90 (Video Speed Class) tested and certified to perform at a minimum sustained transfer speed of 90MB/second Required for use within Panasonic GH5S, Panasonic AU-EVA1 and Canon Cinema EOS line cameras; streamlines Motion JPEG for Canon EOS 5D Mark IV Optimized for 6K, 5K, 4K, UHD, high bit rate MPEG-4 Rigorous full card testing with serialized tracking of key components and manufacturing data for the highest quality control Professional-level capacities 64GB Error correction to detect and correct data write and data transfer errors; wear-levelling for integrity and longer life X-ray proof, shock-proof Refresh Pro enabled to quickly refresh card performance and monitor card health Security Built-in write-protect switch prevents accidental data loss