The Angelbird 512 GB UHS-II V90 SDXC AV PRO MK2 Memory Card is a 512 GB SD card rated V90. It reads at up to 300 MB/s, writes at up to 280 MB/s, and never drops below 90 MB/s. The card is magnet resistant, shockproof, static proof, weatherproof, and X-ray proof.