The SDSQXA1-400G-GN6MA microSDXC (TransFlash) card by WD/SanDisk Retail is crafted for users who demand high-performance storage for their adventures or professional tasks. This 400GB Extreme card comes with advanced features like Video Speed Class 30 (V30) and UHS Speed Class 3 (U3), allowing for flawless 4K UHD video recording and playback. With a standout A2 rating for application performance, this card promises faster app launch and performance on compatible devices, making it suitable for gaming devices, drones, action cameras, and smartphones. Moreover, the card's remarkable transfer speed of up to 160mb/s ensures quick and efficient file management, allowing users to spend more time capturing and less time transferring. Designed to endure extreme conditions, it's waterproof, shockproof, temperature-proof, and x-ray proof, offering peace of mind for adventurers and outdoor professionals who rely on their data's integrity in all situations.