Exceptional Speed and Performance: Delkin Devices 256GB POWER CFexpress B Memory Card delivers burst read speeds up to 1780MB/s and burst write speeds up to 1700MB/s, with sustained write speeds of 805MB/s. Perfect for recording 4K, 6K, and 8K videos and continuous RAW files with your mirrorless or DSLR camera, while providing a swift workflow with rapid data offloading for immediate file access and efficient post-production. Optimized For Professionals: Designed specifically for professional photographers and videographers, this memory card 256GB is rigorously tested to ensure full compatibility with the latest high-end cinematic hosts and a wide range of mirrorless and DSLR cameras, offering reliable performance for demanding shoots. Durable Design: With its shockproof, X-Ray proof, and waterproof construction, this 256GB camera memory card is built to endure harsh conditions, ensuring your card remains safe and secure. Unrivaled Warranty: Delkin Devices offers a premium 48-Hour Replacement Guarantee, meaning we will replace any non-working card within 48 hours (excluding weekends) of notification. Just let us know, and a new card will be on its way! Versatile Capacity: Available in 128GB, 160GB, 165GB, 256GB, 325GB, 512GB, 1TB, 1.3TB, 2TB sizes, providing ample space for all your high-resolution video and photo needs, ensuring you have the storage you need for extensive content capture.