The Delkin Devices SD UHS-II U3 memory card is designed to capture smooth, uninterrupted 4K, 2K & 3D cinema-quality footage, without corruption or dropped frames, at write speeds up to 250MB/s. The card is also approved for real-time broadcasting and supports continuous-burst shooting, allowing you to capture rapid-fire RAW shots without delay. With transfer speeds reaching 280MB/s, the SD UHS-II card ensures the quickest, most efficient data transfer from card to computer, allowing you to view and work on your files sooner. Designed with a second row of pins, the SD UHS-II card is able to record data at a significantly faster rate in UHS-II enabled cameras and hosts, but also allows for backwards compatibility with UHS-I and Class 10 cameras, camcorders, and readers. The card is backed by a Lifetime Warranty and Delkin"s American based customer support team out of San Diego, CA.