ProGrade Digital 128GB / 256GB UHS-II SDXC V90 Memory Card

General Features High performance speed tested to perform at sequential read speeds of up to 300 MB/s and sequential write speeds of up to 250 MB/sV90 (Video Speed Class) tested and certified to perform at a minimum sustained transfer speed of 90 MB/sRequired for use with the Panasonic GH5S, Panasonic AU-EVA1, and Canon Cinema EOS line camerasStreamlines Motion JPEG for the Canon EOS 5D Mark IVOptimized for 6K, 5K, 4K, UHD 4K, and high bit rate MPEG-4Rigorous full card testing with serialized tracking of key components and manufacturing data for the high quality controlComponent-level testing down to individual memory chips for improved qualityError correction to detect and correct data write and data transfer errorsWear-leveling for integrity and longer lifeX-ray proof and shockproofOperating temperature range of -13 to 185°FStorage temperature range of -40 to 185°F