The Delkin Devices 512GB SDXC Elite 633X Memory Card ensures a responsive performance for your camera when recording 4K and 1080p videos. It also facilitates RAW burst image capture by reducing lag. Built for DSLRs and Mirrorless cameras, the card provides a maximum reading and writing speed of 90 Mbps. The V30 Video Speed Class rating offers a minimum writing speed of 30 Mbps. You can enable the write-protect switch to keep your stored data from being overwritten. The integrated error-correction maintains data integrity to prevent corruption of files. As the card is resistant to water, shocks, and X-rays, it can be used when working in harsh weather. You can store the card in the provided case for safe keeping.