Professional Grade Performance & Speed: Designed for professionals, the Delkin Devices POWER 256GB micro SD card delivers read speeds up to 300MB/s and write speeds up to 250MB/s. With a V90 rating, it supports uninterrupted 8K, 4K, 3D, HDR, and 360º video recording at sustained write speeds of 90MB/s. Streamlined Workflow: Achieve maximum efficiency with rapid data transfer speeds reaching 300MB/s. Quickly offload large files for immediate access and post-production, minimizing waiting and maximizing your shooting time. Our high endurance micro SD card 256GB is crucial for professionals needing a smooth and productive workflow. Durable Design: Built to endure extreme conditions, our micro SDXC memory card is waterproof, shockproof, and X-ray proof. It features built-in error correction and wear-leveling to ensure data integrity over time, providing reliability and peace of mind in challenging environments. World's Best Warranty: Enjoy a Lifetime Warranty and Delkin's 48-Hour Replacement Guarantee for manufacturer defects. Supported by our dedicated American-based customer support team in San Diego, CA, we ensure exceptional service and satisfaction. Versatile Compatibility: Includes an SD UHS-II adapter, providing versatility to use in a wide range of devices, including your DSLR camera, GoPro, camcorder, action camera, or drone. Backed by Delkin’s lifetime warranty and American-based customer support, your investment is protected wherever your work takes you.