The SDSDXDK-064G-GN4IN by WD/SanDisk Retail is a premium 64GB SDXC Extreme PRO UHS-II flash card, tailored for professionals who require not just additional storage but the fastest possible write and read speeds. Featuring a Class 10, U3, and V90 video speed class, it supports the high-capacity, high-speed demands of 4K and 8K video, as well as high-resolution and burst photography settings. With unprecedented read speeds up to 300MB/s and write speeds up to 260MB/s, the memory card supremely enhances workflow efficiencies from shooting to post-production. Furthermore, it's built ruggedly to withstand harsh conditions, being water, shock, temperature, and x-ray proof. This SDXC card represents WD/SanDisk Retail’s commitment to deliver top-tier, durable storage solutions, ensuring professionals can capture and store their creative works with confidence and reliability.