San Disk 64GB Extreme PRO SDXC UHS-II Memory Card Description. For faster continuous burst mode shots maximum post-production workflow efficiency & the highest video recording performance get the San Disk Extreme PRO SDHC UHS-ll card. It boasts shot speeds up to 250 MBs 1667x & transfer speeds up to 280 MBs 1867x. Its sustained video capture of 30 MBs U3 supports 16GB of cinema-quality 4K Full HD & 3D video recording. Optimized for cameras that support the UHS-ll standard the San Disk Extreme PRO SDHC UHS-ll card delivers the uncompromising results that professional photographers dem&. Product Highlights. Great for High Performance DSLRs & Pro Video Cameras Professional speed for capturing more shots in continuous burst mode up to 250 MBs write Highest video performance available to support cinema-quality 4K Full HD & 3D video recording Transfer speeds up to 280 MBs for maximum post-production workflow efficiency Extreme durability water proof temperature proof shock proof & x-ray proof