The SDSDXDK-256G-GN4IN is a robust 256GB SDXC flash card from WD/SanDisk Retail, crafted specifically for professional photographers and videographers who demand the highest levels of performance and reliability. This Extreme PRO UHS-II card features a Class 10, U3 rating, and Video Speed Class 90 (V90), ensuring that it can handle the high-speed capture of 4K UHD and Full HD video without skipping a beat. With astonishing read speeds of up to 300MB/s and write speeds of up to 260MB/s, it significantly reduces the time needed for file transfers and post-processing, enabling efficient workflows. The card is designed to withstand challenging conditions, being shockproof, temperature-proof, waterproof, and x-ray-proof, making it an excellent choice for adventure and action photographers. The SDSDXDK-256G-GN4IN balances speed, capacity, and durability, making it an indispensable companion for professionals who require the utmost in performance and reliability from their storage solutions.