World's First 512GB SD Memory Card on September 15, 2014 Get link Facebook X Pinterest Email Other Apps SanDisk Extreme PRO SDXC UHS-1 Memory Card.Features:$799.99 tag price90Mb/s write speed95Mb/s read speed4K video recording at 3840 x 2160 pixelsShock-resistantX-ray resistantWater-resistantTemperature range (from -13 degrees to 185 degrees Fahrenheit)